Matthew 9:14

“Then came to him the disciples of John, etc.] Of John the Baptist, to whom they had addicted themselves, and by whom they abode: though their master was in prison, and the Messiah was known to be come, yet still they were attached to John, and particularly imitated him in the austerities of his life. These, either hearing of the great entertainment made at Matthew’s house for Christ, and his disciples, at which they were offended; or else being moved, and set on by the Pharisees, with whom they were agreed in the business of fasting, came to Christ where he was, and put this question to him, saying, why do we, and the Pharisees, fast oft, but thy disciples fast not? Not that they wanted to…”

“Then came the disciples of John ... - This narrative is found also in Mark 2:18-22; Luke 5:33-39. The reference here is to John the Baptist. It is probable that they had understood that John was the forerunner of the Messiah; and if such was the case, they could not account for the fact that there was such a difference between them and the disciples of Jesus. The Pharisees fasted often - regularly twice a week besides the great national days of fasting, Luke 18:12. See the notes at Matthew 6:16-18. This was the established custom of the land, and John did not feel himself authorized to make so great a change as to dispense with it. They were desirous of knowing, therefore, why Jesus had done…”

“Then - While he was at table. Mar 2:18; Luk 5:33. Matthew 9:15”

“9:14 fast: Fasting expressed personal humility and repentance (2 Sam 12:16-23; Dan 9:3). It called attention to the national need for repentance (Lev 16:29-31; Neh 9:1) and probably sought to hasten the arrival of the Messiah through purification. The fact that Jesus and his disciples did not fast (Matt 11:18-19) subtly proclaimed that the Messiah had already arrived (see also 6:16).”

“the disciples: Mat 11:2; Joh 3:25, Joh 4:1 Why: Mat 6:16, Mat 11:18, Mat 11:19; Pro 20:6; Mar 2:18-22; Luk 5:33-39, Luk 18:9-12 Matthew 9:15”