The main theme of Exodus is the knowledge of God. It is the knowledge of God that leads His people out of slavery and into His presence for worship. Thus, the first third of the book deals with getting out of Egypt, and the final half of the book deals with the Levitical way of access into God's presence for worship. God reveals Himself in bringing His people out, and He reveals Himself through the tabernacle, the law, and the covenant. The climax of this book is at the very end, when God comes to live with His people. The path to that climax is rocky, as we see God reveal His ways through Israel's enslavement, through His rescue of them, and then through His revelation of His law, covenant, and worship. But the payoff is all the more earth-shattering because getting there has been so hard. So let's trace the path of God's people from slavery to worship via the knowledge of God.