Matthew 11:14

And if you are willing to accept it, John himself is [the fulfillment of] Elijah [as the messenger] who was to come [before the kingdom].

Malachi 4:5

“Behold, I am going to send you Elijah the prophet before the coming of the great and terrible day of the Lord.

Matthew 17:10-13

The disciples asked Him, “Then why do the scribes say that Elijah must come first?”

Mark 9:11-13

They asked Him, saying, “Why do the scribes say that Elijah must come first [before the Messiah comes]?”

Luke 1:17

It is he who will go as a forerunner before Him in the spirit and power of Elijah, to turn the hearts of the fathers back to the children, and the disobedient to the attitude of the righteous [which is to seek and submit to the will of God]—in order to make ready a people [perfectly] prepared [spiritually and morally] for the Lord.”

Ezekiel 2:5

As for them, whether they listen or refuse [to listen]—for they are a rebellious house—yet they will know and be fully aware of the fact that there has been a prophet among them.

Ezekiel 3:10-11

Moreover, He said to me, “Son of man, receive into your heart all My words which I will speak to you and hear with your ears (listen closely).

John 1:21-23

They asked him, “What then? Are you Elijah?” And he said, “I am not.” “Are you the [promised] Prophet?” And he answered, “No.”

John 16:12

“I have many more things to say to you, but you cannot bear [to hear] them now.

1 Corinthians 3:2

I fed you with milk, not solid food; for you were not yet able to receive it. Even now you are still not ready.

Revelation 20:4

And then I saw thrones, and sitting on them were those to whom judgment [that is, the authority to act as judges] was given. And I saw the souls of those who had been beheaded because of their testimony of Jesus and because of the word of God, and those who had refused to worship the beast or his image, and had not accepted his mark on their forehead and on their hand; and they came to life and reigned with Christ for a 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
As for them, whether they listen or refuse [to listen]—for they are a rebellious house—yet they will know and be fully aware of the fact that there has been a prophet among them.
Ezekiel 3:10
Moreover, He said to me, “Son of man, receive into your heart all My words which I will speak to you and hear with your ears (listen closely).
John 16:12
“I have many more things to say to you, but you cannot bear [to hear] them now.
1 Corinthians 3:2
I fed you with milk, not solid food; for you were not yet able to receive it. Even now you are still not ready.

General references

Mark 9:11
They asked Him, saying, “Why do the scribes say that Elijah must come first [before the Messiah comes]?”