Can anyone tell me where in the Bible the Sabbath was changed from Saturday to Sunday and why it was changed?

Answer 1

It never says that Sunday is the "new Sabbath". The Scriptures only teach the observance of the 7th day Sabbath(Saturday)

If you read most of the above answers you can see a sample of what people say when asked about the Sabbath. They say it was changed or we worship on Sunday because of (insert reason) yet they NEVER produce 1 verse saying that Sunday is the new Sabbath or day of rest or day we are to come together and worship.

Why?
Because it is NOT there. The scriptures uphold the continuity of the 7th day Sabbath(Saturday)


Below is an explanation of the Sabbath it is a little long but covers all questions people have about the Sabbath


Was the Sabbath created by God on Mt. Sinai?

And on the seventh day God ended His work which He had done, and He rested on the seventh day from all His work which He had done. Then God blessed the seventh day and sanctified it, because in it He rested from all His work which God had created and made.
Genesis 2:2,3

The Sabbath was part of creation week


What does the Bible say about the Sabbath?

“ Remember the Sabbath day, to keep it holy. Six days you shall labor and do all your work, but the seventh day is the Sabbath of the LORD your God. In it you shall do no work: you, nor your son, nor your daughter, nor your male servant, nor your female servant, nor your cattle, nor your stranger who is within your gates. For in six days the LORD made the heavens and the earth, the sea, and all that is in them, and rested the seventh day. Therefore the LORD blessed the Sabbath day and hallowed it. Exodus 20:8-11


But we don’t really know which day is the seventh?

It is highly unlikely that the entire Jewish community forgot which day was their Holy day.

Which day is the seventh day?

Saturday : the seventh day of the week
-Webster’s Dictionary


Are there other examples of God emphasizing the Sabbath?

He said to them, "This is what the LORD commanded: 'Tomorrow is to be a day of rest, a holy Sabbath to the LORD. Exodus 16:23

And the LORD said unto Moses, How long refuse ye to keep my commandments and my laws? See, for that the LORD hath given you the Sabbath, therefore he giveth you on the sixth day the bread of two days; abide ye every man in his place, let no man go out of his place on the seventh day. So the people rested on the seventh day. Exodus 16:28-30

Both of these examples are before Mt. Sinai and the 10 commandments.

Speak thou also unto the children of Israel, saying, Verily my Sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the LORD that doth sanctify you. Exodus 30:13


I am a Christian and I want to follow Christ. Did Jesus keep the Sabbath?

He went to Nazareth, where he had been brought up, and on the Sabbath day he went into the synagogue, as was his custom. And he stood up to read. Luke 4:16

Going on from that place, he went into their synagogue, and a man with a shriveled hand was there. Looking for a reason to accuse Jesus, they asked him, "Is it lawful to heal on the Sabbath?" Matthew 12:9,10

They went to Capernaum, and when the Sabbath came, Jesus went into the synagogue and began to teach. Mark 1:21

When the Sabbath came, he began to teach in the synagogue, and many who heard him were amazed. Mark 6:2

He went to Nazareth, where he had been brought up, and on the Sabbath day he went into the synagogue, as was his custom. And he stood up to read. Luke 4:16

Then he went down to Capernaum, a town in Galilee, and on the Sabbath began to teach the people. Luke 4:31

On a Sabbath Jesus was teaching in one of the synagogues Luke 13:10


But isn’t Sunday the Lord’s day?

Six days you shall labor and do all your work, but the seventh day is the Sabbath of the LORD your God. Exodus 20:8

If thou turn away thy foot from the Sabbath, from doing thy pleasure on my holy day; and call the Sabbath a delight, the holy of the LORD, honourable; and shalt honour Him, not doing thine own ways, nor finding thine own pleasure, nor speaking thine own words:
Isa 58:14 Then shalt thou delight thyself in the LORD; and I will cause thee to ride upon the high places of the earth, and feed thee with the heritage of Jacob thy father: for the mouth of the LORD hath spoken it. Isa 58:13,14

For the Son of Man is Lord of the Sabbath. Matthew 28:8

So the Son of Man is Lord even of the Sabbath. Mark 1:21

Then Jesus said to them, "The Son of Man is Lord of the Sabbath." Luke 6:5


Did Jesus expect his followers to keep the Sabbath after he ascended into heaven?
Jesus speaking of the destruction of Jerusalem by the Romans in 70 A.D.

Pray that your flight will not take place in winter or on the Sabbath. Matthew 24:20

Did the apostles keep the Sabbath?
Acts 13:14
Acts 13:42
Acts 13:44
Acts 16:13
Acts 17:2
Acts 18:4


But Doesn’t Col 2:14 say that the Sabbath is gone?

Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross

According to this theory then we can commit adultery and murder and steal and worship idols etc.
Is that what Paul means? No!

There are two laws the 10 commandments written by God placed in the Ark and the handwritten law of Moses which was placed outside the ark which “was a witness against us” Deuteronomy 31:25.


But what about I Corinthians 16:2 “Upon the first day of the week let every one of you lay by him in store, as God hath prospered him, that there be no gatherings when I come.”?

This verse says nothing about worship. What it is talking about is collecting money to distribute in Jerusalem (vs. 3)

If we look at Acts 18 Paul went to Corinth to build the Church

Acts 18:4 And he reasoned in the synagogue every Sabbath, and persuaded the Jews and the Greeks.
Acts 18:11 And he continued there a year and six months, teaching the word of God among them.

That is 72 Sabbaths.


But I thought the Gentiles went to Church on Sunday?
Acts 13:42
Acts 17:1-4
Acts 18


Doesn’t Roman’s say we can worship any day?

Rom 14:5 One man esteemeth one day above another: another esteemeth every day alike. Let every man be fully persuaded in his own mind.
Rom 14:6 He that regardeth the day, regardeth it unto the Lord; and he that regardeth not the day, to the Lord he doth not regard it. He that eateth, eateth to the Lord, for he giveth God thanks; and he that eateth not, to the Lord he eateth not, and giveth God thanks.

If you look ate the book of Zechariah you see what Paul was talking about
Then came the word of the LORD of hosts unto me, saying, Speak unto all the people of the land, and to the priests, saying, When ye fasted and mourned in the fifth and seventh month, even those seventy years, did ye at all fast unto me, even to me? And when ye did eat, and when ye did drink, did not ye eat for yourselves, and drink for yourselves? Zechariah 7:4,5
Paul is talking about observing days of Fasts

Let’s think about this is Paul telling people to violate the commandments if Paul had said Rom 14:6 He that kills, kills unto the Lord; and he that kills not, to the Lord he doth not kills.

People would say "That’s crazy you can’t commit murder that’s a moral law, Paul must mean something else." Many people justify breaking the Sabbath because they view all the other laws as more important, and the Sabbath as a minor law. They use this philosophy to justify outright rebellion against God and his law


Didn’t Jesus gave us new laws, Love God and love your neighbor?
These are not new laws they summarize the 10 commandments the first 4 deal with your love for God and the last 6 deal with your love for man. In addition these are not new laws

Deuteronomy 6:5 Love the LORD your God with all your heart and with all your soul and with all your strength.

Leviticus 19:18 'Do not seek revenge or bear a grudge against one of your people, but love your neighbor as yourself. I am the LORD


But aren’t we under Grace now?

“What then? Shall we sin, because we are not under the law but grace? God forbid” Romans 6:15

What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet. Romans7:7

Do we then make void the law through faith? God forbid: yea, we establish the law. Romans 3:31

Is there anywhere in The Bible that says to keep Sunday Holy?
No, The scripture can not be found.


Are we saved by the Law?
NO!! Absolutely NOT!!
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast. Ephesians 2:8,9

“What then? Shall we sin, because we are not under the law but grace? God forbid” Romans 6:15

Will we keep the Sabbath in Heaven?
For as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain. And it shall come to pass, that from one new moon to another, and from one Sabbath to another, shall all flesh come to worship before me, saith the LORD.


Did the calendar change effect the weekly cycle?
No
Thursday, October 4, 1582 was followed by Friday October 15
Did the calendar change? Yes. Did the weekly Cycle change? NO!

Who changed the Sabbath to Sunday
“The earliest recognition of the observance of Sunday, is a constitution of Constantine in 321 A.D.” Encyclopedia Brittanica

Emperor Constantine worshiped the sun god Sol invictis (the undefeated sun) on Sunday and decided to mix pagan worship with Christianity, the question is since when did Pagan monarchs decide Bible truth?


The only commandment that people want to do away with is the only one that starts with Remember.
Is it a burden to keep Sabbath Holy?

No, it is however a burden to MAKE Sunday, which is no where in the Bible called the Sabbath, Holy.


No where in the Bible did Jesus or the Disciples instruct anyone to keep Sunday Holy.


If God created it perfect in the Garden of Eden, Moses and the Israelites kept it, If God commanded us to keep it, God says to take joy in the Sabbath, He is upset when we don’t keep it, Jesus kept it, the disciples kept and taught others to keep it, and we are going to keep it in Heaven shouldn’t we start keeping it here on Earth?



What do ministers of the different Faiths say?

Presbyterian:
“Until, therefore, it can be shown that the whole moral law has been repealed, the Sabbath will stand… The teaching of Christ confirms the perpetuity of the Sabbath” - T.C. Blake D.D. Theology Condensed

Catholic:
“You may read the Bible from Genesis to Revelation, and you will not find a single line authorizing the sanctification of Sunday. The Scriptures enforce the religious observance of Saturday, a day we never sanctify.” - James Cardinal Gibbons

Catholic:
“Perhaps the boldest thing, the most revolutionary change the Church ever did happened in the first century(actually 200yrs later). The holy day, the Sabbath , was changed from Saturday to Sunday… not from any directions noted in the Scriptures, but from the Church’s sense of its own power… People who think that the Scriptures should be the sole authority should logically become Seventh Day Adventists, and keep Saturday holy.” –Saint Catherine Catholic Church Sentinel, May 21. 1995

Baptists:
“There was and is a commandment to keep holy the Sabbath day, but that Sabbath was not Sunday. … It will be said, however, and with some show of triumph, that the Sabbath was transferred from the seventh to the first day of the week… Where can the record of such a transaction be found? Not in the New Testament- absolutely not. There is no scriptural evidence of the change of the Sabbath institution from the seventh to the first day of the week.”- Dr. Edward T. Hiscox, Baptist Manual

Pentecostal:
“Why do we worship on Sunday? Doesn’t the Bible teach us that Saturday should be the Lord’s Day?... Apparently we will have to seek the answer from some other source than the New Testament.” David A Womack, “Is Sunday the Lord’s Day?”

Lutheran:
“The observance of the Lord’s day [Sunday] is founded not on any command of God, but on the authority of the church.” – Augsburg Confession of Faith,


check out this video
http://www.mostamazingprophecies.com/portals/6/mapmedia/map_.asx

Answer 2

The sabbath is the amazing day of the weekly cycle of 7 days. The Jews have not lost track of what day is the seventh day. think of. . . if the day have been lost one way or the quite a few, each Jew alive on the time could have had to have made an comparable mistake mutually... now not available. In any journey, the sabbath is definitely on Saturday based upon the region you're on the earth whilst it is composed of Israel, and what direction you holiday some distance flung from Israel. in case you bypass to the u . s . a . headed west, your sabbath ought to actual by utilising ability of on Saturday. yet in case you headed east to an comparable holiday spot, being conscious of the putting of the daylight hours which will set a million hour in the past for approximately each 1000 miles you holiday, your sabbath must be an finished 24 hours in the past than going any incorrect way, ending up alongside with your sabbath being Friday. additionally, your citation of Jesus and the fact with regard to the sabbath being made for the guy replaced into contained interior the context of those under the regulation, then and there. No Christian is a social amassing to that previous covenant regulation, and that covenant ended. .

Answer 3

It wasn't changed in the Bible. The Sabbath hasn't been changed at all. The Romans used to hold their rituals of worship for the Sun god on Sunday. The sabbath remains to be Saturday. Being that the Catholic Church was Roman, in the beginning they wanted to make it less of a culture shock to the pagans who converted to Christianity, so they adopted some of their practices. Instead of worshipping the Sun on Sunday, they now worshipped the Son. The Catholic Church still held services on Saturday. While it was a good idea in the beginning, Sunday eventually became the main day of worship for Christians, including Protestants.

If you think about it, it doesn't really matter what day the Sabbath is on, so long as it's observed once a week, according to the commandment. It was the Romans and Greeks from whom we got the English versions of the names of our days of the week, anyway. Some people think that Saturday was an olde English way of saying Sabbath Day, but it's not. It's the name of the god Saturn + Olde English "daeg" for day.

It is petty to worry about how and when the Sabbath was changed. Apparently some people feel as though it is a sin that we changed it. Well one should worry more about how many people they are helping instead of how many people they are sharing their petty knowlege about practices and changes in religion.

In fact, I must quote the very first question you ever asked on Answers:

"Why Do People Concern Themselves With Trival Questions?

I have been coming to Answers for a short time now. Sometimes I find very good to the point questions. Lets call them questions with merit. A question a person would ask for direction to help them along their path. Other times I come here and I find nothing but trivial crap. My question is why do people concern themselves with such dribble and not seek the higher things? Does their lives and souls mean so little to them? Do they not know that there are states of being above human?"

My question is, where do you get off judging people and thinking you know what they concern themselves with? How do you know which people do and which people don't seek higher things? The fact is, you don't know anyone's heart, and you have no right calling the things they concern themselves dribble. Are you really so pious and pompous? Because in light of the questions you ask, you seem to assume that you know more than the average guy, as if you are preaching through your questions. My friend, take a second look at yourself, because you are percieved, at least by me, as a modern-day pharasee. If I'm wrong please forgive me, because I really do not know you. But this is the perception I get from you. Thanks for reading this.

Answer 4

The 10 commandments was given To Israel, many Tries to use the 10 commadments as a whipping tool, the word Sabbath means REST, Therefore Jesus said whosoever will let him come & I will give you REST. Jesus came to fulfill the law, Not to destroy but to fulfill, threfore when Christ was hanging there on the cross There also hung the laws in the old testament. It is true that Israel observe Friday night to Saturday night as their sabbath, But if we are to keep a certain day then we will have to observe all the other laws about the sabbath, You can not fix your meals on the sabbath, nor can you do anything, But to answer your question turn to 1st Corinthians Capter 16:1-2 It speaks of bringing your tithes into the church on the first day of the week. You can also read Colossians 2:16-17 & Acts 20:7, The reason we now worship on Sunday's is to show that Christ rose from the dead on Sunday Morning at day break. Apostle Paul knew that Christians worship on Sunday that is why he said to bring your tithes in on the 1st day of the week. & Colossians 2:16-17 says let no man judge you of Holy days, Meats, drink, new moons or the sabbath day.

Answer 5

Protestant theologians and preachers from a wide spectrum of denominations have been quite candid in admitting that there is no Biblical authority for observing Sunday as a sabbath.

History reveals that it was decades after the death of the apostles that a politico-religious system repudiated the Sabbath of Scripture and substituted the observance of the first day of the week. The following quotations, all from Roman Catholic sources, freely acknowledge that there is no Biblical authority for the observance of Sunday, that it was the Roman Church that changed the Sabbath to the first day of the week.

The first Christian reference to Sunday is found in the First Apology of St. Justin Martyr (circa 150 A.D.).

Answer 6

Sabbaths means the 7th day, God rested. There are Sabbath Holy Day also. For example, Pentecost (Meaning 50). Jesus fulfilled Pentecost when He sent the Comforter / Holy Spirit on that day.

Pentecost is the day following the seven week Sabbath = 7X7=49+1=50 (Pentecost).

The Sabbath (7th) remains as a rest, completion, fulfillment, etc.

To me it is being completely restored in relationship to God, through Jesus Christ atonement, & resting in Christ.

Read this morning in Joel Osteen's book, "Your Best Life Now" , That, "Do you see how liberating it can be when you understand the concept of God's timing? When you are truly living by faith, you can relax in what the Bible calls the "rest" of God. That's a place where you're not worried, you're not struggling, you're not trying to figure everything out, wondering why something is or isn't happening. The rest of God is a place of total trust. When you're in God's rest, you know that at the perfect time, God is going to perform everything He promised; He will bring it into being.".

Jesus fulfilled the Sabbaths also. He is Lord of the Sabbath. And our rest is abiding in Him & His Word. That is a 24/7 relationship and can be any day.

Answer 7

The sabbath was given initially by God for man to observe his rest as God did following creation. Under the law of Moses, the sabbath was kept as a commandment for the children of Israel to keep. In the book of Numbers, other sabbaths were given to the Israelites to observe at various times of the year. These were called "back to back sabbaths."

The old law was put aside and done away with when Christ was crucified on the cross and rose, again. As to why the first day of the week was specified, we can only go by apostolic example and commandment. Throughout the book of Acts, and the Pauline epistles, meeting on the first day of the week was commanded in connection with worship services, observing the Lord's supper, and in the weekly contribution, all of which replaced the law of Moses physical observances with spriritual worship to God.

Answer 8

Christ establised a new covenant. The Jews celebrated the Sabboth on Saturday, but Christianity brought with it changes in the old law.

Answer 9

The Lord's day is the day he rose from the dead (Sunday).

Peace,

MoP

Answer 10

*****************Answer Enclosed***************

Actually the Bible Sabbath Saturday was never changed to Sunday. The day of rest always been Saturday according to the Bible, dictionaries, encyclopedias, calendars and etc.
http://www.lcg.org/search/search.php?query=Sabbath&%24results_per_page=10&search=1
http://family.webshots.com/photo/1339740614049373547paHvzb
http://family.webshots.com/photo/1487951482049373547fdCzGX

The Sabbath is from Friday Evening to Saturday Evening; Jews still keep it as some christians. No work is to be done this day.
Jesus himself told us to keep this day (John 4:22-24).
"Ye worship ye know not what; we know what we worship: for salvation is of the Jews." John 4:22
Notice Jesus was saying that we should worship Saturday like the Jews.

Look Sabbath up in Encyclopaedia Americana, Vol.24, pp.68-69.
The Calendar also tells us the 7th day is Saturday.

If you look up Genesis 1:8; it tells us that the evening and morning were the second day. Lev.23:32 says from evening to evening to celebrate the Sabbath.

GENESIS 2:2-3 "AND ON THE SEVENTH DAY GOD ENDED HIS WORK WHICH HE HAD MADE; AND HE RESTED ON THE SEVENTH DAY FROM ALL HIS WORK WHICH HE HAD MADE. AND GOD BLESSED THE THE SEVENTH DAY, AND SANCTIFIED IT: BECAUSE THAT IN IT HE HAD RESTED FROM ALL HIS WORK WHICH GOD CREATED AND MADE." {sanctify = to set apart; make holy}

EXODUS 20:8-11 "REMEMBER THE SABBATH DAY, TO KEEP IT HOLY. SIX DAYS SHALT THOU LABOUR, AND DO ALL THY WORK: BUT THE SEVENTH DAY IS THE SABBATH OF THE LORD THY GOD: IN IT THOU SHALT NOT DO ANY WORK, THOU, NOR THY SON, NOR THY DAUGHTER, THY MANSERVANT, NOR THY MAIDSERVANT, NOR THY CATTLE, NOR THY STRANGER THAT IS WITHIN THY GATES: FOR IN SIX DAYS THE LORD MADE HEAVEN AND EARTH, THE SEA, AND ALL THAT IN THEM IS, AND RESTED THE SEVENTH DAY: WHEREFORE THE LORD BLESSED THE SABBATH DAY, AND HALLOWED IT." {the 4th Commandment}

REV.14:7 "SAYING WITH A LOUD VOICE, FEAR GOD, AND GIVE GLORY TO HIM; FOR THE HOUR OF HIS JUDGEMENT IS COME; AND WORSHIP HIM THAT MADE HEAVEN, AND EARTH, AND THE SEA, AND THE FOUNTAINS OF WATER."{fear God means reverence him; also this text points back to the 4th Commandment}

LEV.23:3 "SIX DAYS SHALL WORK BE DONE: BUT THE SEVENTH DAY IS THE SABBATH OF REST, AN HOLY CONVOCATION; YE SHALL DO NO WORK THERIN: IT IS THE SABBATH OF THE LORD IN ALL YOUR DWELLINGS."

DEUT.5:12-14 "KEEP THE SABBATH DAY TO SANCTIFY IT, AS THE LORD THY GOD HATH COMMANDED THEE. SIX DAYS SHALT THOU LABOUR, AND DO ALL THY WORK: BUT THE SEVENTH DAY IS THE SABBATH OF THE LORD THY GOD: IN IT THOU SHALT NOT DO ANY WORK, THOU, NOR THY SON, NOR THY DAUGHTER, THY MANSERVANT, NOR THY MAIDSERVANT, NOR THINE OX, NOR THINE ***, NOR ANY OF THINE CATTLE, NOR THY STRANGER THAT IS WITHIN THY GATES: THAT THY MANSERVANT AND THY MAIDSERVANT MAY REST AS WELL AS THOU."

{Jesus's Example= "For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps:..-1PETER 2:21}
LUKE 4:16 "AND HE CAME TO NAZARETH, WHERE HE HAD BEEN BROUGHT UP: AND, AS HIS CUSTOM WAS, HE WENT INTO THE SYNAGOGUE ON THE SABBATH DAY, AND STOOD UP TO READ."

MARK 2:23-28 "AND IT CAME TO PASS, THAT HE WENT THROUGH THE CORN FIELDS ON THE SABBATH DAY; AND HIS DISCIPLES BEGAN, AS THEY WENT, TO PLUCK THE EARS OF CORN. AND THE PHARISEES SAID UNTO HIM, BEHOLD, WHY DO THEY ON THE SABBATH DAY THAT WHICH IS NOT LAWFUL? AND HE SAID UNTO THEM, HAVE YE NEVER READ WHAT DAVID DID, WHEN HE HAD NEED, AND WAS AN HUNGRED, HE, AND THEY THAT WERE WITH HIM? HOW HE WENT INTO THE HOUSE OF GOD IN THE DAYS OF ABIATHAR THE HIGH PRIEST, AND DID EAT THE SHEW BREAD, WHICH IS NOT LAWFUL TO EAT BUT FOR THE PRIESTS, AND GAVE ALSO TO THEM WHICH WERE WITH HIM? AND HE SAID UNTO THEM, THE SABBATH WAS MADE FOR MAN, AND NOT MAN FOR THE SABBATH: THEREFORE THE SON OF MAN IS LORD ALSO OF THE SABBATH." {The Pharisees thought his disciples were breaking the Sabbath by plucking and eating corn; but Jesus told them it wasn't work. Jesus healed on the sabbath as helped people. On the Sabbath day you can even warm meals as boil water for oatmeal on the Sabbath. The work that you cannot do is cooking meals because it takes an hour or hours to cook or by staying in the fields to do hard labor or cleaning, shopping in the store, eating at restaurants and etc. The Pharisees were putting their laws on people. But Jesus came back to them, when he said "the Sabbath was made for man".}

{Apostles kept the Sabbath--Eph.2:20}
ACTS 17:2 "AND PAUL, AS HIS MANNER WAS, WENT IN UNTO THEM, AND THREE SABBATH DAYS REASONED WITH THEM OUT OF THE SCRIPTURES."

ACTS 18:4 "AND HE REASONED IN THE SYNAGOGUE EVERY SABBATH, AND PERSUADED THE JEWS AND THE GREEKS."
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Now the question should be "who tried to change it?" if it's not in the Bible.

Catholics know when the seventh day is.
"Ques.--Which is the Sabbath day?
"Ans.--Saturday is the Sabbath day.
"Ques.--Why do we observe Sunday instead of Saturday?
"Ans.--We observe Sunday instead of Saturday because the Catholic Church transferred the solemnity from Saturday to Sunday."--Peter Geiermann, The Convert's Catechism of Catholic Doctrine (1946 ed.), p.50. Geiermann received the "apostolic blessing" of Pope Pius x on his labors, Jan.25,1910. [bible readings pg.194]

"The Catholic Church...by virtue of her divine mission, changed the day from Saturday to Sunday."--The Catholic Mirror, official organ of Cardinal Gibbons, Sept. 23, 1893.

"Of course the Catholic Church claims that the change was her act...And the act is a Mark of her ecclesiastical authority in religious things." ---H.F. Thomas, Chancellor of Cardinal Gibbons.
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The Anti-Christ is the "lawless one"; the "man of sin" which "opposeth and exalteth himself above all that is called God, or that is worshipped..." 2Thess.2:3-4

DANIEL 7:25 tells us "HE SHALL SPEAK GREAT WORDS AGAINST THE MOST HIGH, AND SHALL WEAR OUT THE SAINTS OF THE MOST HIGH, AND THINK TO CHANGE TIMES AND LAWS..."

ROM.1:25 = "WHO CHANGED THE TRUTH OF GOD INTO A LIE, AND WORSHIPPED AND SERVED THE CREATURE MORE THAN THE CREATOR, WHO IS BLESSED FOR EVER. AMEN."

What part of the law did the Papacy change? (Dan.7:25)
General Catholic Catechism
http://www.angelfire.com/sc/YJesusCame/page4.html
http://en.wikipedia.org/wiki/Ten_Commandments
http://family.webshots.com/photo/1339749760049373547pfqiuM

CATHOLIC VERSION (Dan.7:25)
http://www.marianland.com/tencommandments/ten_commandments.html
http://www.truecatholic.org/baltp2.htm
http://www.padfield.com/1993/tencom.html

Note: Catholics even changed the time you do the Sabbath too. They say "midnight to midnight"; when the Bible says "evening to evening" according to Genesis 1:5,8,13,19,23,31 and Lev.23:32.
They changed the New Year from April to January too.

If you want to know more; please see these sites:
http://family.webshots.com/photo/1272715597049373547QOChzt
http://www.biblestudy.org/basicart/valentin.html
http://home.sprynet.com/~pabco/stvalen.htm
http://home.swbell.net/kelkay/valentines

http://family.webshots.com/photo/1342393463049373547FazWzQ
http://www.lcg.org/cgi-bin/tw/magazine/tw-mag.cgi?category=Magazine33&item=1104261794
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The other question you had: why would they change it?

To trick and fool people to worship the sun god instead of the true God. To make people to sin; why do service unto other gods when the Bible says not to have other gods (Exod.20:3)? Isn't there only one God; this is what Jesus says in John 20:17.
If you look above in their writings; it tells us it is a "Mark" of their authority which comes the forcing of Sunday observance to make people worship the Beast. {note: sun god = Sunday; moon god = Monday}
(DEUT.4:19,28-31; 11:26-28; 17:3 & JER.10 & GAL.4:8-10)

"IF ANY MAN WORSHIP THE BEAST{Sunday} AND HIS IMAGE{teachings of Catholic Church} AND RECEIVE HIS MARK IN HIS FOREHEAD,{affections} OR IN HIS HAND" {REV:14:9, refraining from labor on THAT DAY}.{See ECCLES.9:10; ROM.7:25.}

The Mark of the beast is 666! To accept the beast's mark is to not accept God's Holy Sabbath Day Saturday as Working on the Sabbath.(reference Deut.6:8)

If you want more information; ask and email me.