From The Gospel of Matthew by Curtis Mitch and Edward Sri, commenting on Matthew 14:15-19:
Spectacular though it was, the multiplication of the loaves was not an unprecedented event. Similar miracles involving food appear in the Old Testament. One thinks of the manna that rained down from heaven to feed the Israelites in the wilderness (Exod 16:4–21). So too Elijah, when he stayed with a poor widow of Zarephath, caused her nearly empty jar of meal and her depleted cruse of oil to supply the household with food throughout an extended famine (1 Kings 17:8–16). Most relevant here is the miracle of Elijah’s successor, Elisha, who multiplied twenty loaves for one hundred men and still had some left over (2 Kings 4:42–44). Against this background, Christ’s miracle shows that he wields a power even greater than that of the prophets of Israel, for he started with fewer loaves than Elisha and fed a vastly larger crowd!