Final answer:
To seal the covenant with God, Abram had to circumcise himself and all the males of his household and obey God's commands and live a righteous life.
Step-by-step explanation:
In order to seal the covenant with God, Abram had to circumcise himself and all the males of his household, according to Jewish belief. This act of circumcision was an important symbol of devotion and commitment to God. Additionally, the Hebrew Bible states that the Covenant was amended by Yahweh to include obeying God's commands and living a righteous life.