Mark 2:18
As the disciples of John and of the Pharisees were observing a fast, people came and asked him, "Why do John's disciples and the disciples of the Pharisees fast, and your disciples do not fast?"
Matthew 6:16
When you fast, do not look gloomy like the hypocrites, for they look woebegone to let men see they are fasting; I tell you truly, they do get their reward.
Matthew 6:18
so that your fast may be seen not by men but by your Father who is in secret, and your Father who sees what is secret will reward you.
Matthew 9:14-17
Then the disciples of John came up to him and said, "Why do we and the Pharisees fast a great deal, and your disciples do not fast?"
Luke 18:12
Twice a week I fast; on all my income I pay tithes.'
Matthew 23:5
Besides, all they do is done to catch the notice of men; they make their phylacteries broad, they wear large tassels,
Luke 5:33-39
They said to him, "The disciples of John fast frequently and offer prayers, as do the disciples of the Pharisees; but your adherents eat and drink."
Romans 10:3
They would not surrender to the righteousness of God, because they were ignorant of his righteousness and therefore essayed to set up a righteousness of their own.