Malachi 4:5  Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the Lord:

 

Matthew 3:1  In those days came John the Baptist, preaching in the wilderness of Judaea,

2 And saying, Repent ye: for the kingdom of heaven is at hand.

3 For this is he that was spoken of by the prophet Esaias, saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.

 

Matthew 11:10  For this is he, of whom it is written, Behold, I send my messenger before thy face, which shall prepare thy way before thee.

11 Verily I say unto you, Among them that are born of women there hath not risen a greater than John the Baptist: notwithstanding he that is least in the kingdom of heaven is greater than he.

12 And from the days of John the Baptist until now the kingdom of heaven suffereth violence, and the violent take it by force.

13 For all the prophets and the law prophesied until John.

14 And if ye will receive it, this is Elias, which was for to come.

Matthew 17:11  And Jesus answered and said unto them, Elias truly shall first come, and restore all things.

12 But I say unto you, That Elias is come already, and they knew him not, but have done unto him whatsoever they listed. Likewise shall also the Son of man suffer of them.

13 Then the disciples understood that he spake unto them of John the Baptist.

14 And when they were come to the multitude, there came to him a certain man, kneeling down to him, and saying,

15 Lord, have mercy on my son: for he is lunatick, and sore vexed: for ofttimes he falleth into the fire, and oft into the water.

16 And I brought him to thy disciples, and they could not cure him.

17 Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? how long shall I suffer you? bring him hither to me.