At that time John's disciples came and asked Jesus, "Why do we and the Pharisees frequently fast, but your disciples never fast?"
References for Matthew 9:14
Jesus responded, “The wedding guests can't mourn while the groom is still with them, can they? But the days will come when the groom will be taken away from them, and then they'll fast.
"No one sews a piece of new, unshrunk cloth on old clothes because the patch tears away the cloth and makes a worse tear.
No one pours new wine into old wineskins. If they did, the wineskins would burst, the wine would spill, and the wineskins would be ruined. Instead, people pour new wine into new wineskins so that both are kept safe."