'Fast' in the Bible

Now John’s disciples and the Pharisees were fasting [as a ritual]; and they came and asked Jesus, “Why are John’s disciples and the disciples of the Pharisees fasting, but Your disciples are not doing so?”

Jesus answered, “The attendants of the bridegroom cannot fast while the bridegroom is [still] with them, can they? As long as they have the bridegroom with them, they cannot fast.

But the days will come when the bridegroom is [forcefully] taken away from them, and they will fast at that time.