Malachi 4:5

Lo, I am sending to you Elijah the prophet, Before the coming of the day of Jehovah, The great and the fearful.

Luke 1:17

and he shall go before Him, in the spirit and power of Elijah, to turn hearts of fathers unto children, and disobedient ones to the wisdom of righteous ones, to make ready for the Lord, a people prepared.'

Joel 2:31

The sun is turned to darkness, and the moon to blood, Before the coming of the day of Jehovah, The great and the fearful.

Malachi 3:1

Lo, I am sending My messenger, And he hath prepared a way before Me, And suddenly come in unto his temple Doth the Lord whom ye are seeking, Even the messenger of the covenant, Whom ye are desiring, Lo, he is coming, said Jehovah of Hosts.

Isaiah 40:3

A voice is crying -- in a wilderness -- Prepare ye the way of Jehovah, Make straight in a desert a highway to our God.

Malachi 4:1

For, lo, the day hath come, burning as a furnace, And all the proud, and every wicked doer, have been stubble, And burnt them hath the day that came, Said Jehovah of Hosts, That there is not left to them root or branch,

Matthew 17:10-13

And his disciples questioned him, saying, 'Why then do the scribes say that Elijah it behoveth to come first?'

Mark 9:11-13

And they were questioning him, saying, that the scribes say that Elijah it behoveth to come first.

John 1:21

And they questioned him, 'What then? Elijah art thou?' and he saith, 'I am not.' -- 'The prophet art thou?' and he answered, 'No.'

Revelation 6:17

because come did the great day of His anger, and who is able to stand?

Matthew 11:13-14

for all the prophets and the law till John did prophesy,

Matthew 27:47-49

And certain of those standing there having heard, said -- 'Elijah he doth call;'

Luke 7:26-28

'But what have ye gone forth to see? a prophet? Yes, I say to you, and much more than a prophet:

Luke 9:30

And lo, two men were speaking together with him, who were Moses and Elijah,

John 1:25

and they questioned him and said to him, 'Why, then, dost thou baptize, if thou art not the Christ, nor Elijah, nor the prophet?'

Acts 2:19-20

and I will give wonders in the heaven above, and signs upon the earth beneath -- blood, and fire, and vapour of smoke,

Treasury of Scripture Knowledge

Summary

Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD:

Bible References

I will

Malachi 3:1
Lo, I am sending My messenger, And he hath prepared a way before Me, And suddenly come in unto his temple Doth the Lord whom ye are seeking, Even the messenger of the covenant, Whom ye are desiring, Lo, he is coming, said Jehovah of Hosts.
Isaiah 40:3
A voice is crying -- in a wilderness -- Prepare ye the way of Jehovah, Make straight in a desert a highway to our God.
Matthew 11:13
for all the prophets and the law till John did prophesy,
Matthew 17:10
And his disciples questioned him, saying, 'Why then do the scribes say that Elijah it behoveth to come first?'
Matthew 27:47
And certain of those standing there having heard, said -- 'Elijah he doth call;'
Mark 9:11
And they were questioning him, saying, that the scribes say that Elijah it behoveth to come first.
Luke 1:17
and he shall go before Him, in the spirit and power of Elijah, to turn hearts of fathers unto children, and disobedient ones to the wisdom of righteous ones, to make ready for the Lord, a people prepared.'
Luke 7:26
'But what have ye gone forth to see? a prophet? Yes, I say to you, and much more than a prophet:
Luke 9:30
And lo, two men were speaking together with him, who were Moses and Elijah,
John 1:21
And they questioned him, 'What then? Elijah art thou?' and he saith, 'I am not.' -- 'The prophet art thou?' and he answered, 'No.'

General references

Zechariah 14:1
Lo, a day hath come to Jehovah, And divided hath been thy spoil in thy midst.
Matthew 11:10
for this is he of whom it hath been written, Lo, I do send My messenger before thy face, who shall prepare thy way before thee.
Mark 9:11
And they were questioning him, saying, that the scribes say that Elijah it behoveth to come first.
Acts 2:19
and I will give wonders in the heaven above, and signs upon the earth beneath -- blood, and fire, and vapour of smoke,