1. Your name will be Abraham and Sarah (1-14)

After Ishmael's birth, 13 years had elapsed. Abram was content enjoying family life. He almost forgot about God's great promises. But Almighty God did not forget his covenant. He appeared so that Abram may be blameless and walk before God faithfully. God's heart's desire was to make him from Abram (a noble father) into Abraham (a father of many nations). He would increase his numbers and give the whole Land of Canaan. God also changed Sarai into Sarah, a mother of nations. Though Abraham laughed at the promise of God to give him a son in his 100 years old, God did not change his blessing saying, "but your wife Sarah will bear you a son by this time next year, and you will call him Isaac (Laughter)." God also heard his request for Ishmael to prosper.

2. Abraham circumcised (15-27)

God asked to circumcise him and his descendants as a sign of covenant people as well as not to be cut off from God's people. Abraham immediately circumcised him and all the males in his household as a sign of his absolute obedience to God.