Why would Jesus talk about leaving gifts at alters, if he was going to die to abolish all that mumbo jumbo?

Question

Matt. 5:23 Therefore if thou bring thy gift to the altar, and there rememberest that thy brother hath ought against thee; 24 Leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift.

Answer 1

What should you do if you sense that you have offended a fellow worshiper? Jesus said: “If, then, you are bringing your gift to the altar and you there remember that your brother has something against you, leave your gift there in front of the altar, and go away; first make your peace with your brother, and then, when you have come back, offer up your gift.” (Matthew 5:23, 24) You can apply that counsel by taking the initiative to go to your brother. With what objective? To “make your peace” with him. To that end, you may need to acknowledge, not deny, his hurt feelings. If you approach him with the goal of restoring peace and maintain that attitude, likely any misunderstanding can be cleared up, appropriate apologies made, and forgiveness extended. When you go out of your way to make peace, you show that you are guided by godly wisdom.

Answer 2

Jesus didn't die to abolish offerings left at the altar. This is a passage that is talking about forgiveness and reconciling relationships, so that your heart is pure when you leave your offering.

Answer 3

Jesus was pointing out that we should take care of wrongs in our lives (concerning other people) before we give gifts to God, because we are not acceptable to God at that time and so our gift is not acceptable at that time either.

In another place, it is written - Father, forgive us our sins as we forgive those that sin against us (if we do not forgive, God will not forgive us).