Sarah Sarah was Abraham’s wife and half sister (Gen 11:29; 20:12). She accompanied Abraham from Ur to Haran to Canaan (11:31; 12:5). On two occasions, in Egypt (12:10-20) and Gerar (20:1-18), Abraham asked Sarah to say that she was his sister rather than his wife because he was afraid that he would be killed as her husband. In both cases, despite Abraham’s lack of faith, God protected Sarah, thus preserving the chosen line through whom he promised to multiply the Israelite nation (12:2; 17:19). Sarah is one of several women in Scripture who were barren but miraculously bore a son (see also Gen 30:22-24; 1 Sam 1:9-20; 2 Kgs 4:14-17; Luke 1:5-25). After a series of promises from God, Sarah eventually conceived and gave birth to Isaac. Because Sarah was ninety years old when this happened (cp. Gen 17:17; 21:1-5), she testifies to God’s ability to do what is humanly impossible. Her name Sarai was changed to Sarah on one of the occasions when Isaac’s birth was promised (17:15-16). Sarah is honored for her faithfulness, even though she laughed at the prediction of Isaac’s birth (18:10-15), twenty-five years after God’s original promise to Abraham. Sarah died at age 127 and was b...

Abraham “By faith . . . Abraham obeyed when God called him to leave home and go to another land. . . . He went without knowing where he was going. . . . By faith . . . Abraham offered Isaac as a sacrifice when God was testing him” (Heb 11:8, 17). These key events in Abraham’s life illustrate the faithful obedience for which he is best known. God called Abram from the city of Ur to become the patriarch of God’s people. Abram’s family relationships are recorded in Genesis 11:26-32. Terah had three sons: Abram, Nahor, and Haran. Terah left Ur with Abram, Abram’s wife Sarai, and Lot, whose father, Haran, had died. On his way to Canaan, Terah settled in the city of Haran (11:31). God had called Abram to a new land while he was still in Ur (Acts 7:2-4). God told Abram, “Leave your native country, your relatives, and your father’s family, and go to the land that I will show you” (Gen 12:1). God blessed Abram by making a covenant with him that included promises of great blessing, numerous descendants, and a new land (12:1-3). These promises later saved Israel from destruction when they repeatedly failed to keep their covenant with God (see Lev 26:40-45). Abram left Haran at age se...

Circumcision Circumcision, the removal of the male foreskin, was practiced by a number of cultures in the ancient world (see Jer 9:25-26). God chose circumcision as the sign of a covenant that focuses on descendants. God had promised to make Abraham and his descendants into a great nation (Gen 12:2; 17:3-6) and to use them to redeem the Gentile nations (12:3; see Gal 3:8-9). Circumcision was God’s signature in flesh; it would identify Abraham and his descendants as God’s own people (Gen 17:9-14) and remind them to live in faithfulness to the covenant. Although circumcision was applied to adult males when they joined the covenant community (Gen 17:23-27; Exod 12:48; Josh 5:3-7), it was usually performed on infants (Gen 21:4; Lev 12:3), who received God’s promises and membership in the covenant community through their parents. Faith was required in order to receive God’s blessings, however, as can be seen in the differentiation between Ishmael and Isaac, Esau and Jacob, and Joseph and his brothers. Non-Israelites could also obligate themselves to Israel’s covenant (Exod 12:48; cp. Gen 34:15-24), and circumcision marked their inclusion into the worshiping community (e.g., Exo...