Luke 5:35

But the days will come when the bridegroom will be taken away from them; then they will fast in those days."

Luke 17:22

Then he said to the disciples, "The days are coming when you will desire to see one of the days of the Son of Man, and you will not see it.

Matthew 6:17-18

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

Luke 24:17-21

And he said to them, "What is this conversation which you are exchanging with each other as you walk?" And they stood still, looking sad.

John 12:8

The poor you always have with you, but you do not always have me."

John 13:33

Little children, I shall be with you a little while longer. You will seek me; and as I said to the Jews, 'Where I am going, 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 take you to myself, that where I am you may be also.

John 16:4-7

But I have told you these things, that when the time comes, you may remember that I told you of them. "I did not say these things to you at the beginning, because I was with you.

John 16:16-22

"A little while, and you will see me no more; again a little while, and you will see me."

John 16:28

I came from the Father and have come into the world; again, I am leaving the world and going to the Father."

John 17:11-13

And now I am no longer in the world, but they are in the world, and I am coming to you. Holy Father, keep them in your name the name you gave me that they may be one, even as we are one.

Acts 1:9

And after he had said this, as they were looking on, he was lifted up, and a cloud took him out of their sight.

Acts 3:21

whom heaven must receive until the time for establishing all that God spoke by the mouth of his holy prophets from long ago.

Acts 13:2-3

While they were worshipping the Lord and fasting, the Holy Spirit said, "Set apart for me Barnabas and Saul for the work to which I have called them."

Acts 14:23

And when they had appointed elders for them in every church, with prayer and fasting they committed them to the Lord in whom they believed.

1 Corinthians 7:5

Do not deprive one another, except by agreement for a time, so that you may devote yourselves to prayer, and then come together again so that Satan will not tempt you because of your lack of self-control.

2 Corinthians 11:27

I have been in labor and hardship, through many sleepless nights, in hunger and thirst, often without food, in cold and exposure.

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

Matthew 6:17
But when you fast, anoint your head and wash your face,
Acts 13:2
While they were worshipping the Lord and fasting, the Holy Spirit said, "Set apart for me Barnabas and Saul for the work to which I have called them."
Acts 14:23
And when they had appointed elders for them in every church, with prayer and fasting they committed them to the Lord in whom they believed.
1 Corinthians 7:5
Do not deprive one another, except by agreement for a time, so that you may devote yourselves to prayer, and then come together again so that Satan will not tempt you because of your lack of self-control.
2 Corinthians 11:27
I have been in labor and hardship, through many sleepless nights, in hunger and thirst, often without food, in cold and exposure.