Genesis 10 - Descendants and Obligations

Lot leaves Zoar, and his daughters wanted to have children, so they got Lot drunk so that they might get pregnant by him, and through Lot they bear Moab and Ben-ammi, the origin of the Moabites and Ammonites. Abraham goes to Gerar, where he encounters Abimelech. Abimelech, not knowing that Sarah is married, wants to add her to his harem, but God, wishing to preserve the lineage of Isaac, tells Abimelech in a dream that she is married and he confronts Abraham and Sarah and sends them away with gifts. Abimelech later comes to Abraham and asks that Abraham might remember his kindness with his descendants when Abraham comes into power. Sarah names her son Isaac, for laughter, and when she sees Isaac with Ishmael, his older half-brother, she sends Ishmael and Hagar away, but an angel of the lord tells Hagar that Ishmael will also be a great nation. God tests Abraham and asks him to sacrifice his son, but before he can do it, an angel stops Abraham, and God blesses him for not holding anything back. Gal 3:15ff points out that the promises to Abraham were made to him and his offspring, singular, meaning Christ. The sacrifice of Isaac also is a precursor of the willing sacrifice of Christ, and of the resurrection (for if Isaac had died, God would have to have raised him to fulfill his promises).