'Fast' in the Bible

Now John’s disciples and the Pharisees were fasting. People came and asked Him, “Why do John’s disciples and the Pharisees’ disciples fast, but Your disciples do not fast?”

Jesus said to them, “The wedding guests cannot fast while the groom is with them, can they? As long as they have the groom with them, they cannot fast.

But the time will come when the groom is taken away from them, and then they will fast in that day.