Expositor's Bible Commentary Commentary Mark 2:19

"And Jesus said unto them, Can the sons of the bridechamber fast, while the bridegroom is with them? as long as they have the bridegroom with them, they cannot fast." — Mark 2:19 (ASV)

Jesus answers in a parable emphasizing the joy that the presence of Jesus makes possible. Therefore fasting, as a sign of mourning, is not appropriate. To fast during a wedding, a time of great joy and festivity, would be unthinkable. Jesus is the bridegroom (v.19) and his disciples the guests. While he remains with them they will rejoice, not fast. However, he will not always be with them. When he is taken away, fasting will be appropriate. This is probably a veiled reference to his death (the word used implies a violent removal that causes sorrow).