In this chapter, I. Israel looks back upon Egypt with a song of praise for their deliverance. Here is, 1. The song itself, Exod. 15:1-19. 2. The solemn singing of it, Exod. 15:20, 21. II. Israel marches forward in the wilderness (Exod. 15:22), and there, 1. Their discontent at the waters of Marah (Exod. 15:23, 24), and the relief granted them, Exod. 15:25, 26. 2. Their satisfaction in the waters of Elim, Exod. 15:27.