The Israelites grumble that they have nothing to eat. Yahweh provides them quail at night and manna in the morning to make bread. As a test of their faith, Yahweh tells them to take only enough manna for one day; two days before the sabbath.
Exodus 15: The Song of Moses and Miriam
The Israelites sing a song praising Yahweh for deliverance from the Egyptians. They find bitter water in Marah. The find an oasis in Elim to set up camp.