The Book of Shemot
The Book of Exodus
The second book of the Torah – called Shemot in Hebrew- is commonly known as Exodus in translated texts.
Beneath the story’s use of legendary motifs, miracles, and mythic language and imagery, there was indeed a bona fide attempt by Israelite scribes to preserve traditions rooted in history.
Because the Israelites used history-writing conventions different from ours does not mean they were unable or unwilling to preserve traditions about historical people and events. We are not constrained to interpret miraculous reports literally.
Other ancient peoples also used similar mythic language and imagery to celebrate otherwise actual (and meaningful) historical events. Therefore, the incorporation of supernatural imagery was not just a convention of ancient fiction writing but also one of ancient history writing. Israelite writers were constrained to tell the story this way.
However, there is more to interpreting the book than demonstrating that this or that happened.
 CASSUTO, U.: A Commentary of the Book of Exodus, p.3
 MENDENHALL, GEORGE, E.: Ancient Israel’s Faith and History: An Introduction to the Bible in Context, pp. 43-44
 ENNS, PETER: Exodus: The NIV Application Commentary, p. 24
The book of Exodus is divided into four parts.
Chapters 1-15: 21
The story of Israel in Egypt, the oppression, the struggle for freedom, and the final liberation;
Chapter 15: 22 to Chapter 18
the account of the journey from the Red Sea to Sinai;
the covenant at Sinai and prescriptions of the law;
the command to erect the Tabernacle, and its implementation.