The book of Exodus is the story of God rescuing the children of Israel from Egypt and forging a special relationship with them. The overall theme of Exodus is redemption—how God delivered the Israelites and made them His special people. After He rescued them from slavery, God provided the Law, which gave instructions on how the people could be consecrated or made holy. He established a system of sacrifice, which guided them in appropriate worship behavior.
A challenge from the book of Exodus, Chapters 1-40 (King James Version edition)