Chapter Summary
Chapter 21 details the long-awaited birth of Isaac to Abraham and Sarah, fulfilling God's promise. Following Isaac's weaning, tension arises between Sarah and Hagar, leading to Hagar and her son Ishmael being sent away into the wilderness. God intervenes to save Hagar and Ishmael, promising to make a great nation from Ishmael as well. The chapter concludes with Abraham making a peace treaty with Abimelech concerning a water well at a place called Beersheba, marking a period of peaceful dwelling for Abraham.