Matthew 6:16

"And, when ye fast, be not as the hypocrites, of a sad countenance; for they disfigure their faces, that they may appear to men to fast. Verily I say to you, they receive their reward.

Matthew 6:2

When, therefore, you are doing alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, that they may have glory of men. Verily I say to you, they receive their reward.

Matthew 6:5

"And, when ye pray, ye shall not be as the hypocrites; for they love to pray, standing in the synagogues and in the corners of the streets, that they may be seen by men: verily I say to you, they have their reward.

Luke 18:12

I fast twice on the Sabbath; I give a tenth of all that I acquire.'

Matthew 9:14-15

Then came to Him the disciples of John, saying, "Why do we and the Pharisees fast often, but Thy disciples fast not?"

Mark 2:18

And John's disciples and the Pharisees were fasting; and they come and say to Him, "Why do John's disciples and the disciples of the Pharisees fast, but Thy disciples fast not?"

Acts 10:30

And Cornelius said, "Four days ago, until this hour, I was praying during the ninth hour in my house; and, behold, a man stood before me in bright apparel,

Acts 13:2-3

And, while they were ministering to the Lord, and fasting, the Holy Spirit said, "Separate now to Me Barnabas and Saul for the work to which I have called them."

Acts 14:23

And, having appointed elders for them in every assembly; and, having prayed with fastings, they commended them to the Lord on Whom they had believed.

1 Corinthians 7:5

Defraud not one the other, except by consent for a Season, that ye may have leisure for prayer, and may be together again, that Satan tempt you not because of your incontinency.

2 Corinthians 6:5

in stripes, in imprisonments, in tumults, in toilings, in watchings, in fastings;

2 Corinthians 11:27

in toil and hardship, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

Treasury of Scripture Knowledge

Summary

Moreover when ye fast, be not, as the hypocrites, of a sad countenance: for they disfigure their faces, that they may appear unto men to fast. Verily I say unto you, They have their reward.

Bible References

When

Matthew 9:14
Then came to Him the disciples of John, saying, "Why do we and the Pharisees fast often, but Thy disciples fast not?"
Acts 10:30
And Cornelius said, "Four days ago, until this hour, I was praying during the ninth hour in my house; and, behold, a man stood before me in bright apparel,
Acts 13:2
And, while they were ministering to the Lord, and fasting, the Holy Spirit said, "Separate now to Me Barnabas and Saul for the work to which I have called them."
Acts 14:23
And, having appointed elders for them in every assembly; and, having prayed with fastings, they commended them to the Lord on Whom they had believed.
1 Corinthians 7:5
Defraud not one the other, except by consent for a Season, that ye may have leisure for prayer, and may be together again, that Satan tempt you not because of your incontinency.
2 Corinthians 6:5
in stripes, in imprisonments, in tumults, in toilings, in watchings, in fastings;
2 Corinthians 11:27
in toil and hardship, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

Be

Matthew 6:2
When, therefore, you are doing alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, that they may have glory of men. Verily I say to you, they receive their reward.
Mark 2:18
And John's disciples and the Pharisees were fasting; and they come and say to Him, "Why do John's disciples and the disciples of the Pharisees fast, but Thy disciples fast not?"
Luke 18:12
I fast twice on the Sabbath; I give a tenth of all that I acquire.'