This thesis analyzes the role of Abraham in the establishment of the covenant between God and himself in Genesis 15. It is also interested in the ongoing responsibility of the patriarch once the covenant is ratified. First, through a study of the literary context, it was demonstrated that Abraham shows a constant and active faithfulness in his relationship with God. It is because of his obedience that God could make a covenant with him and promise him an heir and a land. Second, by comparing the treaties in the Ancient Near East with the covenant in Genesis 15, it is concluded that the biblical text reflects the Hittite land grants of the 2 nd millennium BCE, with a suzerain bestowing favors on a vassal--in this case Abraham--who had showed exceptional loyalty. The grant, though, was given in perpetuity and unconditionally only at the corporate level: individuals among the descendants of the vassal may suffer punishment and death should they disobey, but the gift can not be taken completely away from the lineage; a remnant will always remain to enjoy it.