Malachi 4:5-6 Behold, I will send you Elijah the prophet Before the coming of the great and dreadful day of the LORD. And he will turn The hearts of the fathers to the children, And the hearts of the children to their fathers, Lest I come and strike the earth with a curse.'
Matthew 17:10-13 And His disciples asked Him, saying, "Why then do the scribes say that Elijah must come first?" Jesus answered and said to them, "Indeed, Elijah is coming first and will restore all things. But I say to you that Elijah has come already, and they did not know him but did to him whatever they wished. Likewise the Son of Man is also about to suffer at their hands." Then the disciples understood that He spoke to them of John the Baptist.
Matthew 11:13-14 For all the prophets and the law prophesied until John. And if you are willing to receive it, he is Elijah who is to come.
Luke 1:17 He will also go before Him in the spirit and power of Elijah, 'to turn the hearts of the fathers to the children,' and the disobedient to the wisdom of the just, to make ready a people prepared for the Lord."
John 1:19-21 Now this is the testimony of John, when the Jews sent priests and Levites from Jerusalem to ask him, “Who are you?” He confessed, and did not deny, but confessed, “I am not the Christ.” And they asked him, “What then? Are you Elijah?” He said, “I am not.” “Are you the Prophet?” And he answered, “No.”
Isaiah 40:3 The voice of one crying in the wilderness: " Prepare the way of the LORD; Make straight in the desert A highway for our God.
Matthew 11:11 'Assuredly, I say to you, among those born of women there has not risen one greater than John the Baptist; but he who is least in the kingdom of heaven is greater than he.
John 1:6-8 There was a man sent from God, whose name was John. This man came for a witness, to bear witness of the Light, that all through him might believe. He was not that Light, but was sent to bear witness of that Light.
John 1:23 He said: “I am ‘ The voice of one crying in the wilderness: “ Make straight the way of the LORD,”’ as the prophet Isaiah said.”
John 10:41 Then many came to Him and said, “John performed no sign, but all the things that John spoke about this Man were true.”
