On the next day, the multitude that stood on the other side of the sea saw that there was no other boat there, except the one in which his disciples had embarked, and that Jesus hadn't entered with his disciples into the boat, but his disciples had gone away alone.

 Andrew did not know what he was doing when he brought that lad to Jesus that day, but he was providing material for a miracle. We never know what possibilities we are releasing when we bring someone to Jesus. 