Matthew 9:14

Then the disciples of John came to him, saying, "Why do we and the Pharisees fast, but your disciples do not fast?"

Matthew 11:2

Now when John heard in prison about the deeds of the Christ, he sent word by his disciples

John 3:25

Now a discussion arose between some of John's disciples and a Jew over purification.

John 4:1

Now when Jesus learned that the Pharisees had heard that Jesus was making and baptizing more disciples than John

Proverbs 20:6

Many a man proclaims his own steadfast love, but a faithful man who can find?

Matthew 6:16

"And when you fast, do not look gloomy like the hypocrites, for they disfigure their faces that their fasting may be seen by others. Truly, I say to you, they have received their reward.

Matthew 11:18-19

For John came neither eating nor drinking, and they say, 'He has a demon.'

Mark 2:18-22

Now John's disciples and the Pharisees were fasting. And people came and said to him, "Why do John's disciples and the disciples of the Pharisees fast, but your disciples do not fast?"

Luke 5:33-39

And they said to him, "The disciples of John fast often and offer prayers, and so do the disciples of the Pharisees, but yours eat and drink."

Luke 18:9-12

He also told this parable to some who trusted in themselves that they were righteous, and treated others with contempt:

Treasury of Scripture Knowledge

Summary

Then came to him the disciples of John, saying, Why do we and the Pharisees fast oft, but thy disciples fast not?

Bible References

Why

Matthew 6:16
"And when you fast, do not look gloomy like the hypocrites, for they disfigure their faces that their fasting may be seen by others. Truly, I say to you, they have received their reward.
Matthew 11:18
For John came neither eating nor drinking, and they say, 'He has a demon.'
Proverbs 20:6
Many a man proclaims his own steadfast love, but a faithful man who can find?
Mark 2:18
Now John's disciples and the Pharisees were fasting. And people came and said to him, "Why do John's disciples and the disciples of the Pharisees fast, but your disciples do not fast?"
Luke 5:33
And they said to him, "The disciples of John fast often and offer prayers, and so do the disciples of the Pharisees, but yours eat and drink."
Luke 18:9
He also told this parable to some who trusted in themselves that they were righteous, and treated others with contempt:

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.