Genesis 20

Gerar was near the coast in Philistine land, about 19 kilometers (12 miles) south of Gaza and 80 kilometers (50 miles) southwest of Hebron.

• This second "sister story" in Genesis (compare 12:10–20) happened just before Sarah became pregnant with Isaac (chapter 21). In both instances, God protected Abraham and Sarah's marriage to keep it pure for the covenant promises. To be part of God's plan, his people must separate from worldly corruption.

• This story happened in the promised land. It showed Israel how God intervened in people's lives to fulfill his plan. He protected them from threats from other tribes. He used his chosen people to mediate his relationship with other nations.

• By preventing adultery from destroying Abraham's marriage, God reminded the Israelites not to marry those who would lead them away from the Lord (Ezra 9:1–4; Nehemiah 13:23–27; Malachi 2:10–17). They should not allow any chance for temptation. Adultery would eventually destroy the covenant and the people.

• Abraham lied to Abimelech, just as he had lied to Pharaoh (12:13). Isaac later did the same (26:1–11), probably learning this from his father.

• Abimelech (which means "my father the king") was probably a title like Pharaoh (37:36; Exodus 1:15), not a personal name (see study note on Genesis 26:1).

One night … God came … in a dream: God urgently intervened to stop Abimelech from harming Sarah's purity right before fulfilling his promise (18:10; 21:1–3).

God gave Abimelech a strong warning against committing adultery. This was a crime that could be punished by death (compare Exodus 20:14). The ancient Near East considered it "tremendous guilt" (Genesis 20:9).

• Abimelech was innocent (20:6). He knew of no wrong he had done. But he was close to committing adultery. Not knowing the truth does not remove guilt (Leviticus 4:13–14).

• would You destroy a nation even though it is innocent?: Abimelech's plea to God echoes Abraham's earlier words (compare 18:23–32). It shows Abraham's lack of faith at this time.

Because Abimelech acted with a clear conscience, God kept him from sinning. God will graciously help those who try to do what is right. When people act with reverence toward God, God gives them more revelation and draws them into more specific faith (see Acts 10).

Abraham's prayer saved the king's life and restored his family (20:17–18). Abimelech learned that Abraham's God was sovereign (meaning God has complete power and authority over everything). Abraham, as God's prophet, received God's messages and would pray for others (see Numbers 12:13; Deuteronomy 9:20). This was true even if he did not always act like a prophet.

Abraham received rebukes from Abimelech and God (compare 12:17–19). Abimelech was upset because Abraham's lie made him guilty of this serious sin (see study note on 20:3–7). Abimelech understood that taking a married woman into his harem (a group of wives and concubines) was wrong.

Abraham's deceit was not just a brief loss of faith. Even after being scolded in Egypt, he used this strategy everywhere he traveled (compare 12:12–13). Living by faith requires perseverance.

Abimelech showed he was an honorable person by making things right (see study note on 20:4–5). He made things right by letting Abraham live in the area. He also gave him slaves, livestock (compare 21:27), and 1,000 pieces of silver to make up for any wrong done to Sarah.

The inability to have children suggests that some time had passed. God controls births. He decides when women can have children (25:21; 29:31; 30:2, 17, 22–23; 1 Samuel 1:19–20; Psalms 113:9; 127:3; Luke 1:13).