Dayeinu is a song that explores the kindnesses of God to His people on the long journey from slavery to freedom. There are fifteen stages described between leaving Egypt, reaching the Promised Land, and building the Temple in Jerusalem. This song is a tikkun, a “putting-right,” for the ingratitude of the Israelites in the wilderness. At almost every stage of their journey, they complained: about the water, the food, the difficulties of travelling, the challenge of conquering the land. It is as if we are saying: where they complained, let us give thanks. Each stage was a miracle. And each miracle would have been enough to convince us that Hashem is behind all the events in our history.