Chp. 19 verse 1 - chp. 20 verse 6: Avraham and Sawra go to Gerar, where he experiences another of his ten tests. Sawra is abducted by Avimelech the king of Gerar. The king is warned by Hashem to release her. His whole household is plagued because of her. The king releases her with lavish gifts. Avraham prays for him, and then he and his household are cured. Chp. 20, begins with Hashem remembering Sawra and she gives birth to Yitzhok. Avraham who is one hundred years old, circumcises him on the eighth day of his birth and names him Yitzhok.