Luke 5:35

But the days will come also, when the bridegroom shall be carried away from them; then shall they fast in those days.

Luke 17:22

And he said to the disciples, The days come when ye shall eagerly desire to see one of the days of the Son of man, and ye shall not see.

Isaiah 22:12

And the Lord Jehovah of armies in that day will call to weeping and to wailing, and to baldness and to girding with sackcloth:

Daniel 9:26

And after sixty and two weeks, Messiah shall be cut off, and not for him: and the people of the leader coming shall destroy the city and the holy place; and its end with an overflowing, and even to the end of the war desolations were determined.

Zechariah 13:7

O sword, be raised up against my shepherd, and against the man of my fellowship, says Jehovah of armies: strike the shepherd and the sheep shall be scattered; and I turned back my hand upon the little ones.

Matthew 6:17-18

And thou fasting, anoint thy head, and wash thy face;

Luke 24:17-21

And he said to them, What words these which, walking about, ye discuss with one another, and are of gloomy aspect?

John 12:8

For the poor have ye always with you;and me ye have not always.

John 13:33

Little children, yet a little am I with you. Ye shall seek me: and as I said to the Jews, That where I retire, ye cannot come; and I say to you now.

John 14:3-4

And if I go and prepare a place for you, again I come, and I will receive you to myself; that where I am, ye might be also.

John 16:4-7

But these have I spoken to you, that when the hour should come, ye should remember them, for I said to you. And these I said not to you from the beginning, for I was with you.

John 16:16-22

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

John 16:28

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

John 17:11-13

And I am no more in the world, and these are in the world, and I come to thee. O holy Father, keep them in thy name whom thou but given me, that they might be one, as we.

Acts 1:9

And having said these, they beholding, he was lifted up; and a cloud received him from their eyes.

Acts 3:21

Whom heaven must truly receive till time of restoration of all which God spake by the mouth of all his holy prophets from forever.

Acts 13:2-3

And they serving the Lord, and fasting, the Holy Spirit said, Separate to me Barnabas and Saul to the work which I have called them.

Acts 14:23

And having chosen them elders in the church, having prayed with fasting, they set them before the Lord, in whom they had believed.

1 Corinthians 7:5

Deprive ye not one another, except somewhat of an agreement for a time, that ye might have leisure for fasting and prayer; and again upon the same ye might come together, lest Satan tempt you for your want of self command.

2 Corinthians 11:27

In fatigue and toil, in watchfulnesses 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 the Lord Jehovah of armies in that day will call to weeping and to wailing, and to baldness and to girding with sackcloth:
Matthew 6:17
And thou fasting, anoint thy head, and wash thy face;
Acts 13:2
And they serving the Lord, and fasting, the Holy Spirit said, Separate to me Barnabas and Saul to the work which I have called them.
Acts 14:23
And having chosen them elders in the church, having prayed with fasting, they set them before the Lord, in whom they had believed.
1 Corinthians 7:5
Deprive ye not one another, except somewhat of an agreement for a time, that ye might have leisure for fasting and prayer; and again upon the same ye might come together, lest Satan tempt you for your want of self command.
2 Corinthians 11:27
In fatigue and toil, in watchfulnesses often, in hunger and thirst, in fastings often, in cold and nakedness.