Mark 2:18
And the disciples of John and of the Pharisees were in the habit of fasting; and they came, and said to him: Why do the disciples of John and of the Pharisees fast, but your disciples fast not?
Matthew 6:16
And when you fast, do not put on a sad countenance, as the hypocrites do; for they disfigure their faces, that they may appear to men to be fasting. Verily, I say to you, They have their reward.
Matthew 6:18
that you may not appear to men to be fasting, but to your Father who is in secret. And your Father who sees in secret will reward you.
Matthew 9:14-17
Then came to him the disciples of John, saying: Why do we and the Pharisees fast often, but your disciples fast not?
Luke 18:12
I fast twice in the week; I give tithes of all that I possess.
Matthew 23:5
And they do all their works for the purpose of being seen by men. They make their amulets broad, and enlarge the fringes of their mantles.
Luke 5:33-39
And they said to him: Why do the disciples of John fast often, and make prayers, and likewise the disciples of the Pharisees, but yours eat and drink?
Romans 10:3
For being ignorant of God's plan of justification, and seeking to establish their own plan of justification, they have not submitted to God's plan of justification.