Mark 2:18
John's disciples and the Pharisees were fasting, and they came and asked him, "Why do John's disciples and the disciples of the Pharisees fast, but your disciples don't fast?"
Matthew 6:16
"Moreover when you fast, don't be like the hypocrites, with sad faces. For they disfigure their faces, that they may be seen by men to be fasting. Most certainly 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 don't 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 men. They make their phylacteries broad, enlarge the fringes of their garments,
Luke 5:33-39
They said to him, "Why do John's disciples 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 didn't subject themselves to the righteousness of God.