Matthew 11:14

and if ye are willing to receive it, he is Elijah who was about to come;

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.

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.

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.'

Ezekiel 2:5

and they -- whether they hear, or whether they forbear, for a rebellious house they are -- have known that a prophet hath been in their midst.

Ezekiel 3:10-11

And He saith unto me, 'Son of man, all My words, that I speak unto thee, receive with thy heart, and with thine ears hear;

John 1:21-23

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

John 16:12

I have yet many things to say to you, but ye are not able to bear them now;

1 Corinthians 3:2

with milk I fed you, and not with meat, for ye were not yet able, but not even yet are ye now able,

Revelation 20:4

And I saw thrones, and they sat upon them, and judgment was given to them, and the souls of those who have been beheaded because of the testimony of Jesus, and because of the word of God, and who did not bow before the beast, nor his image, and did not receive the mark upon their forehead and upon their hand, and they did live and reign with Christ the thousand years;

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

If

Ezekiel 2:5
and they -- whether they hear, or whether they forbear, for a rebellious house they are -- have known that a prophet hath been in their midst.
Ezekiel 3:10
And He saith unto me, 'Son of man, all My words, that I speak unto thee, receive with thy heart, and with thine ears hear;
John 16:12
I have yet many things to say to you, but ye are not able to bear them now;
1 Corinthians 3:2
with milk I fed you, and not with meat, for ye were not yet able, but not even yet are ye now able,

General references

Mark 9:11
And they were questioning him, saying, that the scribes say that Elijah it behoveth to come first.