Genesis speaks of beginnings  of the heavens and the earth, of light and darkness, of seas and skies, of land and vegetation, of sun and moon and stars, of sea and air and land animals, of human beings made in God's own image, of marriage and family, of society and civilization, of sin and redemption. The list could go on and on. 

The book of Genesis is foundational to the understanding of the rest of the Bible. It talks about relationships, highlighting those between God and his creation, between God and humankind, and between human beings. It is thoroughly monotheistic, It clearly teaches that the one true God is sovereign over all that exists, and that he often exercises his unlimited freedom to overturn human customs, traditions and plans. It introduces us to the way in which God initiates and makes covenants with his chosen people, pledging his love and faithfulness to them and calling them to promise theirs to him. It establishes sacrifice as the substitution of life for life