George Leo Haydock

This was the first miracle which Jesus had performed in public, and to manifest his glory; but Maldonatus is of opinion that he had before wrought many miracles, known to the blessed Virgin and St. Joseph; which gave her the confidence to ask one now. This opinion is no way contrary to the evangelist. His disciples believed in him. They had believed in him before or they would not have followed him. This confirmed their faith. (Calmet)