Book of Genesis assurance of all Christians) and the redemptive act of Christ on the Cross as the fulfillment of covenant promises as the Son of God. Tradition credits Moses as the author of Genesis, as well as Exodus, Book of Leviticus, Numbers and most of Book of Deuteronomy, but modern scholars increasingly see them as a product of the 6th and 5th centuries BC. Genesis appears to be structured around the recurring phrase "elleh toledot", meaning "these are the generations," with the first use of the phrase referring to the "generations of heaven and earth" and the remainder marking individuals—Noah, the "sons
Book of Leviticus sin and guilt offerings, provide the means to gain forgiveness for sins (Leviticus 4–5) and purification from impurities (Leviticus 11–16) so that God can continue to live in the Tabernacle in the midst of the people. Scholars generally agree that Leviticus developed over a long time and that it reached its present form in the Persian period (538–332 BC). The English name Leviticus comes from the Latin "Leviticus," which is in turn from the Greek Greek Λευιτικόν, "Leuitikon", referring the priestly tribe of the Israelites, “Levi.” The Greek expression is in turn a variant of the rabbinic Hebrew "torat kohanim",