Mark 9:12 what's the meaning of 'restoreing all things?'?

Question

9As they were coming down the mountain, Jesus gave them orders not to tell anyone what they had seen until the Son of Man had risen from the dead.
10They kept the matter to themselves, discussing what "rising from the dead" meant.

11And they asked him, "Why do the teachers of the law say that Elijah must come first?"

12Jesus replied, "To be sure, Elijah does come first, and restores all things. Why then is it written that the Son of Man must suffer much and be rejected?
13But I tell you, Elijah has come, and they have done to him everything they wished, just as it is written about him."

The Transfiguration
2After six days Jesus took Peter, James and John with him and led them up a high mountain, where they were all alone. There he was transfigured before them. 3His clothes became dazzling white, whiter than anyone in the world could bleach them. 4And there appeared before them Elijah and Moses, who were talking with Jesus.
5Peter said to Jesus, "Rabbi, it is good for us to be here. Let us put up three shelters—one for you, one for Moses and one for Elijah." 6(He did not know what to say, they were so frightened.)

7Then a cloud appeared and enveloped them, and a voice came from the cloud: "This is my Son, whom I love. Listen to him!"

8Suddenly, when they looked around, they no longer saw anyone with them except Jesus.

Answer 1

Through the prophet Malachi, another “great and fear-inspiring day of Jehovah” was foretold, and it was said that it would be preceded by the coming of “Elijah the prophet.” (Mal 4:5, 6) The original Elijah had lived some 500 years before that prophecy was uttered, but in the first century C.E. Jesus indicated that John the Baptizer was the foretold counterpart of Elijah. In the transfiguration vision, Moses and Elijah appeared alongside Jesus, conversing with him. Whom do they foreshadow?
Since Moses and Elijah shared in Christ’s glory, these two faithful witnesses must represent those who rule with Jesus in his Kingdom. The understanding that Jesus has corulers is in harmony with a visionary foregleam of the enthroned Messiah that the prophet Daniel was granted. Daniel saw “someone like a son of man” receiving “an indefinitely lasting rulership” from “the Ancient of Days,” Jehovah God. But note what Daniel is shown shortly thereafter. He writes: “The kingdom and the rulership and the grandeur of the kingdoms under all the heavens were given to the people who are the holy ones of the Supreme One.” (Daniel 7:13, 14, 27)

Answer 2

Mat_17:11
Elias truly shall first come, and restore all things - He did not mean by this that Elijah was yet to come, for he tells them immediately (Mat_17:12) that he had come; but he meant to affirm that it was a true doctrine which the scribes taught, that Elijah would appear before the coming of the Messiah. To “restore” means to put into the former situation. (See Mat_12:13). Hence, it means to heal, to correct, to put in proper order. Here it means that Elijah would put things in a proper state; he would be the instrument of reforming the people, or of restoring them, in some measure, to proper notions about the Messiah and preparing them for his coming. Before the coming of John their views were erroneous, their expectations were worldly, and their conduct were exceedingly depraved. He corrected many of their notions about the Messiah (see Matt. 3), and he was the instrument of an extensive reformation, and thus restored them, in some degree, to correct views of their own system and of the Messiah, and to a preparation for his advent.

Answer 3

apparantly jesus means that the authority of elijah came and restored the truths of the gospel so that Jesus can be counted as messiah.

but this is a repeated event, before the last days could finish the restoration of the gospel had to come again in order to fulfill the dispensation of the fullness of times, then again this is before the 2nd coming and the kingdom of God with all the holy angels.

Answer 4

Mark 9:12 is referring to the Elijah message. Names have meaning and the meaning of Elijah is "My Mighty one is Jah" (The shortened form of YHVH) So anyone coming in the Spirit and Power of Elijah, must be worshiping YHVH (Yahoowah) In another place, it says turning to hearts of the children to the Father.