Matthew 17:10-13

17:10 The disciples asked him, “Why then do the experts in the law say that Elijah must come first?” 17:11 He answered, “Elijah does indeed come first and will restore all things. 17:12 And I tell you that Elijah has already come. Yet they did not recognize him, but did to him whatever they wanted. In the same way, the Son of Man will suffer at their hands.” 17:13 Then the disciples understood that he was speaking to them about John the Baptist.

Malachi 4:5

4:5 Look, I will send you Elijah the prophet before the great and terrible day of the Lord arrives.

Mark 9:11-13

9:11 Then they asked him, “Why do the experts in the law say that Elijah must come first?” 9:12 He said to them, “Elijah does indeed come first, and restores all things. And why is it written that the Son of Man must suffer many things and be despised? 9:13 But I tell you that Elijah has certainly come, and they did to him whatever they wanted, just as it is written about him.”

Luke 1:17

1:17 And he will go as forerunner before the Lord in the spirit and power of Elijah, to turn the hearts of the fathers back to their children and the disobedient to the wisdom of the just, to make ready for the Lord a people prepared for him.”

John 1:21-23

1:21 So they asked him, “Then who are you? Are you Elijah?” He said, “I am not!” “Are you the Prophet?” He answered, “No!” 1:22 Then they said to him, “Who are you? Tell us so that we can give an answer to those who sent us. What do you say about yourself?”

1:23 John said, “I am the voice of one shouting in the wilderness, ‘Make straight the way for the Lord,’ as Isaiah the prophet said.”

Revelation 20:4

20:4 Then I saw thrones and seated on them were those who had been given authority to judge. I also saw the souls of those who had been beheaded because of the testimony about Jesus and because of the word of God. These had not worshiped the beast or his image and had refused to receive his mark on their forehead or hand. They came to life and reigned with Christ for a thousand years.