chunk: God resolves to destroy the cities of Sodom and Gomorrah for the sins of their people. Abraham protests and gets God to agree not to destroy the cities if 10 righteous men can be found. Angels save Abraham's nephew Lot and his family, but his wife looks back on the destruction against their command and is turned into a pillar of salt. Lot's daughters, concerned that they are fugitives who will never find husbands, get him drunk to become pregnant by him, and give birth to the ancestors of the Moabites and Ammonites.
  Abraham and Sarah go to the foreign land of Gerar, pretending to be brother and sister (they are half-siblings). The King of Gerar takes Sarah for his wife, but God warns him to return her, and he obeys. God sends Sarah a son to be named Isaac, through whom the covenant will be established. At Sarah's insistence, Ishmael and his mother Hagar are driven out into the wilderness, but God saves them and promises to make Ishmael a great nation.