Matthew 6:16

And when you may fast, be not like the hypocrites, of a sad contenance: for they disfigure their faces, in order that they may appear unto the people fasting. Truly I say unto you, They exhaust their reward.

Matthew 6:2

therefore when you may do alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, in order that they may be glorified by the people: truly I say unto you, They exhaust their reward.

Matthew 6:5

And when you pray, be not like the hypocrites: because they love to pray standing in the synagogues and in the corners of the streets, in order that they may appear unto the people. Truly I say unto you, They exhaust their reward.

Luke 18:12

I fast twice per week; I give tithes of all things so many as I possess.

Matthew 9:14-15

Then the disciples of John come to Him, saying, Wherefore do we and the Pharisee fast, but thy disciples do not fast?

Mark 2:18

The disciples of John and the Pharisees were fasting. And they come and say to Him; Wherefore do the disciples of John and the Pharisees fast, and thy disciples do not fast?

Luke 2:37

and she a widow of about fourscore years, who did not depart from the temple, worshiping night and day with fastings and prayers.

Acts 10:30

And Cornelius said, From the fourth day until this hour, indeed the ninth, I was praying in my house, and, behold, a man stood before me in shining apparel,

Acts 13:2-3

And they ministering to the Lord, and fasting, the Holy Spirit said, Now separate unto me Barnabas and Saul for the work to which I have called them.

Acts 14:23

And electing elders for them in every church, praying with fasting, they commended them to the Lord, on whom they had believed.

1 Corinthians 7:5

Do not defraud one another, unless it may be with consent for a time, that you may give attention to prayer, and again come together, in order that Satan may not tempt you on account of your incontinency.

2 Corinthians 6:5

in stripes, in prisons, in tumults, in labors, in vigils, in fastings;

2 Corinthians 11:27

in labor and in toil, in vigils often, in hunger and in thirst, in fastings often, in cold and in 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 the disciples of John come to Him, saying, Wherefore do we and the Pharisee fast, but thy disciples do not fast?
Luke 2:37
and she a widow of about fourscore years, who did not depart from the temple, worshiping night and day with fastings and prayers.
Acts 10:30
And Cornelius said, From the fourth day until this hour, indeed the ninth, I was praying in my house, and, behold, a man stood before me in shining apparel,
Acts 13:2
And they ministering to the Lord, and fasting, the Holy Spirit said, Now separate unto me Barnabas and Saul for the work to which I have called them.
Acts 14:23
And electing elders for them in every church, praying with fasting, they commended them to the Lord, on whom they had believed.
1 Corinthians 7:5
Do not defraud one another, unless it may be with consent for a time, that you may give attention to prayer, and again come together, in order that Satan may not tempt you on account of your incontinency.
2 Corinthians 6:5
in stripes, in prisons, in tumults, in labors, in vigils, in fastings;
2 Corinthians 11:27
in labor and in toil, in vigils often, in hunger and in thirst, in fastings often, in cold and in nakedness.

Be

Matthew 6:2
therefore when you may do alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, in order that they may be glorified by the people: truly I say unto you, They exhaust their reward.
Mark 2:18
The disciples of John and the Pharisees were fasting. And they come and say to Him; Wherefore do the disciples of John and the Pharisees fast, and thy disciples do not fast?
Luke 18:12
I fast twice per week; I give tithes of all things so many as I possess.