When Jesus was asked a question on the subject of fasting as recorded in Matthew 9, he answered in a way that God’s people should well understand. He used a wedding metaphor.
Then the disciples of John came to him, saying, ‘Why do we and the Pharisees fast, but your disciples do not fast?’ And Jesus said to them, ‘Can the wedding guests mourn as long as the bridegroom is with them? The days will come when the bridegroom is taken away from them, and then they will fast.’” (Matt. 9:14-15)
The basic lesson of this metaphor is that fasting is like waiting for a wedding. Better yet, fasting is like the bride longing for the wedding and bringing it more quickly by that longing. It is asking the lover of your soul to come and make a holy visitation.
With this metaphor, Jesus explained that his disciples were not fasting at the time because he was with them. But when he would leave to go to heaven where he is now, note what he says will happen. Look at the last three words of verse 15: “they will fast.” Jesus expects Christians to fast.
Our Lord made that clear earlier in the gospel of Matthew. […]