Sarah was his half-sister; they had the same father but different mothers (Gen. 20:12). Sarah was about 65 years old when she and Abraham left Haran (Gen. 12:5; 17:7). Passing through Egypt, Abraham introduced Sarah as his sister, apparently to keep himself from being killed by those who would be attracted by Sarah’s beauty (Gen. 12:10–20; also see 20:1–18). In spite of God’s promise to Abraham that he would become the father of a chosen nation, Sarah remained barren. When she was 75, she decided