Matthew 9:14

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

Matthew 11:2

Now when John had heard in the prison the works of Christ, he sent two of his disciples,

John 3:25

Then there arose a dispute between some of John's disciples and the Jews, about purifying.

John 4:1

When therefore the Lord knew, that the Pharisees had heard, Jesus maketh and baptizeth more disciples than John,

Matthew 6:16

Moreover, when ye fast, be not as the hypocrites of a sad countenance; for they disfigure their faces, that they may appear unto men to fast: verily I say unto you, they have their reward.

Matthew 11:18-19

For John came neither eating nor drinking; and they say, He hath a devil.

Mark 2:18-22

And the disciples of John and of the Pharisees used to fast: and they come and say to him, Why do the disciples of John and of the Pharisees fast, but thy disciples fast not?

Luke 5:33-39

And they said to him, Why do the disciples of John, and likewise of the Pharisees, fast often and make prayers; but thine eat and drink?

Luke 18:9-12

And he spake this parable to certain who trusted in themselves that they were righteous and despised others.

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
Moreover, when ye fast, be not as the hypocrites of a sad countenance; for they disfigure their faces, that they may appear unto men to fast: verily I say unto you, they have their reward.
Matthew 11:18
For John came neither eating nor drinking; and they say, He hath a devil.
Mark 2:18
And the disciples of John and of the Pharisees used to fast: and they come and say to him, Why do the disciples of John and of the Pharisees fast, but thy disciples fast not?
Luke 5:33
And they said to him, Why do the disciples of John, and likewise of the Pharisees, fast often and make prayers; but thine eat and drink?
Luke 18:9
And he spake this parable to certain who trusted in themselves that they were righteous and despised others.