John Gill Commentary Luke 5:34

"And Jesus said unto them, Can ye make the sons of the bride-chamber fast, while the bridegroom is with them?" — Luke 5:34 (ASV)

And he said to them
The disciples of John, or the Scribes and Pharisees:

can you make the children of the bride chamber fast, while the
bridegroom is with them?
signifying, that he was the bridegroom, and his disciples the children of the bride chamber; and that as it is unreasonable to expect, and morally impossible, that persons, attending the festivals of a nuptial solemnity, should be engaged in severe fastings; so it was not to be thought, that while Christ was corporeally present with his disciples, that they should be prevailed upon to live such an austere and mortified life.