Luke 5:35

But the days will come, when the bridegroom shall be taken away from them, and then shall they fast in those days.

Luke 17:22

And he said unto the disciples, The days will come, when you shall desire to see one of the days of the Son of man, and you shall not see it.

Isaiah 22:12

And in that day did the Lord GOD of hosts call for weeping, and for mourning, and for baldness, and for girding with sackcloth:

Daniel 9:26

And after threescore and two weeks shall Messiah be cut off, but not for himself: and the people of the prince that shall come shall destroy the city and the sanctuary; and its end shall be with a flood, and unto the end of the war desolations are determined.

Zechariah 13:7

Awake, O sword, against my shepherd, and against the man that is close to me, says the LORD of hosts: strike the shepherd, and the sheep shall be scattered: and I will turn my hand against the little ones.

Matthew 6:17-18

But you, when you fast, anoint your head, and wash your face;

Luke 24:17-21

And he said unto them, What manner of words are these that you have one to another, as you walk, and are sad?

John 12:8

For the poor always you have with you; but me you have not always.

John 13:33

Little children, yet a little while I am with you. You shall seek me: and as I said unto the Jews, Where I go, you cannot come; so now I say to you.

John 14:3-4

And if I go and prepare a place for you, I will come again, and receive you unto myself; that where I am, there you may be also.

John 16:4-7

But these things have I told you, that when the time shall come, you may remember that I told you of them. And these things I said not unto you at the beginning, because I was with you.

John 16:16-22

A little while, and you shall not see me: and again, a little while, and you shall see me, because I go to the Father.

John 16:28

I came forth from the Father, and am come into the world: again, I leave the world, and go to the Father.

John 17:11-13

And now I am no more in the world, but these are in the world, and I come to you. Holy Father, keep through your own name those whom you have given me, that they may be one, as we are.

Acts 1:9

And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.

Acts 3:21

Whom the heaven must receive until the times of restitution of all things, which God has spoken by the mouth of all his holy prophets since the world began.

Acts 13:2-3

As they ministered to the Lord, and fasted, the Holy Spirit said, Separate me Barnabas and Saul for the work to which I have called them.

Acts 14:23

And when they had ordained elders in every church, and had prayed with fasting, they commended them to the Lord, on whom they believed.

1 Corinthians 7:5

Deprive not one the other, except it be with consent for a time, that you may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your lack of self-control.

2 Corinthians 11:27

In weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

Treasury of Scripture Knowledge

Summary

But the days will come, when the bridegroom shall be taken away from them, and then shall they fast in those days.

Bible References

And

Isaiah 22:12
And in that day did the Lord GOD of hosts call for weeping, and for mourning, and for baldness, and for girding with sackcloth:
Matthew 6:17
But you, when you fast, anoint your head, and wash your face;
Acts 13:2
As they ministered to the Lord, and fasted, the Holy Spirit said, Separate me Barnabas and Saul for the work to which I have called them.
Acts 14:23
And when they had ordained elders in every church, and had prayed with fasting, they commended them to the Lord, on whom they believed.
1 Corinthians 7:5
Deprive not one the other, except it be with consent for a time, that you may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your lack of self-control.
2 Corinthians 11:27
In weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.