Mark 2:18
Now John's disciples and the Pharisees were fasting. And people came and said to him, "Why do John's disciples and the disciples of the Pharisees fast, but your disciples do not fast?"
Matthew 6:16
"And when you fast, do not look gloomy, like the hypocrites, for they disfigure their faces that they may be seen by men to be fasting. Truly, I say to you, they have received their reward.
Matthew 6:18
so that you do not appear to be fasting to men, but to your Father who is in secret; and your Father who sees in secret will reward you.
Matthew 9:14-17
Then the disciples of John came to him, saying, "Why do we and the Pharisees fast, but your disciples do not fast?"
Luke 18:12
I fast twice a week; I give tithes of all that I get.'
Matthew 23:5
But they do all their works to be seen by men; for they make their phylacteries broad and the tassels of their garments long.
Luke 5:33-39
They said to him, "The disciples of John fast often and offer prayers, and so do the disciples of the Pharisees, but yours eat and drink."
Romans 10:3
For, being ignorant of the righteousness that comes from God, and seeking to establish their own, they did not submit to God's righteousness.