Book excerpt: The book of Exodus is a key to understanding the Bible. Without it, the Bible would lack three early scenes: deliverance, covenant and worship. Exodus provides the events and narrative, the themes and imagery foundational for understanding the story of Israel and of Jesus. You can read Exodus on your own, and its main themes will be clear enough. But an expert can sharpen your understanding and appreciation of its drama. Tremper Longman provides a box-seat guide to Exodus, discussing its historical backdrop, sketching out its literary context, and developing its principal themes, from Israel's deliverance from servitude to Pharaoh to its dedication to service to God. And, for Christians, he helps us view the book from the perspective of its fulfillment in Christ.