As Genesis is the book of beginnings, Exodus is the book of redemption. Although the Book of Exodus nowhere claims Mosaic authorship in toto, the entire body of Pentateuchal law, comprising principally the portion extending from Exodus 20 through the Book of Deuteronomy, in explicitly positive terms claims to be Mosaic. Present-day conservative scholarship as well as tradition have maintained the Mosaic authorship.
Critical theories offer no adequate substitute for Mosaic authenticity.