Exodus embraces about 431 years of history, from the arrival of Jacob and his family in Egypt (ca. 1876 B.C.) to the erection of the tabernacle in the wilderness of Sinai (ca. 1445 B.C.). However 1:1-7 is a review of Jacob's family. If we eliminate this section, the narrative resumes the story of the Israelites where Genesis ends, after the death of Joseph. About 364 years elapsed between the death of Joseph and the building of the tabernacle. The bulk of the book (chs. 3-40) deals with only two of these years, the year before and the year after the Exodus from Egypt. The Exodus event is clearly the focus of this book.
The Israelites lived in Egypt 430 years (12:40). Genesis 15:13 has the round number 400 years as the time of Israel's oppression in Egypt.4
