the disciples.

Matthew 9:14-17
At that time, John's disciples came to Jesus and asked, "Why is it that we and the Pharisees fast so often, but Your disciples do not fast?" . . .

Luke 5:33-39
Then they said to Him, "John's disciples and those of the Pharisees frequently fast and pray, but Yours keep on eating and drinking." . . .

Why.

Matthew 6:16, 18
When you fast, do not be somber like the hypocrites, for they disfigure their faces to show men they are fasting. Truly I tell you, they already have their reward. . . .

Matthew 23:5
All their deeds are done for men to see. They broaden their phylacteries and lengthen their tassels.

Luke 18:12
I fast twice a week and pay tithes of all that I receive.'

Romans 10:3
Because they were ignorant of God's righteousness and sought to establish their own, they did not submit to God's righteousness.