Mark 2:18
And John's disciples and the Pharisees were fasting, and they came and asked him, "Why do the disciples of John and those of the Pharisees fast, but your disciples do not fast?"
Matthew 6:16
"Moreover when you fast, do not be like the hypocrites, with sad faces. For they disfigure their faces, that they may be seen by men to be fasting. Truly I tell you, they have received their reward.
Matthew 6:18
so that you are not seen by men to be fasting, but by your Father who is in secret, and your Father, who sees in secret, will reward you.
Matthew 9:14-17
Then John's disciples came to him, saying, "Why do we and the Pharisees fast often, 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 all their works they do to be seen by others. They make their tefillin broad and enlarge the fringe of their garments,
Luke 5:33-39
They said to him, "The disciples of John often fast and pray, likewise also the disciples of the Pharisees, but yours eat and drink."
Romans 10:3
For being ignorant of God's righteousness, and seeking to establish their own righteousness, they did not subject themselves to the righteousness of God.