BIBLE CHAPTER STUDY
Genesis 20 — Abraham and Abimelech at Gerar
Abraham sojourns in Gerar and repeats his half-truth that Sarah is his sister; God warns King Abimelech in a dream, and the crisis ends with Sarah's restoration and Abraham's intercessory prayer.
Scripture
1And Abraham journeyed from thence toward the land of the South, and dwelt between Kadesh and Shur; and he sojourned in Gerar.
2And Abraham said of Sarah his wife, She is my sister: and Abimelech king of Gerar sent, and took Sarah.
3But God came to Abimelech in a dream of the night, and said to him, Behold, thou art but a dead man, because of the woman whom thou hast taken; for she is a man's wife.
4Now Abimelech had not come near her: and he said, Lord, wilt thou slay even a righteous nation?
5Said he not himself unto me, She is my sister? and she, even she herself said, He is my brother: in the integrity of my heart and the innocency of my hands have I done this.
6And God said unto him in the dream, Yea, I know that in the integrity of thy heart thou has done this, and I also withheld thee from sinning against me: therefore suffered I thee not to touch her.
7Now therefore restore the man's wife; for he is a prophet, and he shall pray for thee, and thou shalt live: and if thou restore her not, know thou that thou shalt surely die, thou, and all that are thine.
8And Abimelech rose early in the morning, and called all his servants, and told all these things in their ears: and the men were sore afraid.
9Then Abimelech called Abraham, and said unto him, What hast thou done unto us? and wherein have I sinned against thee, that thou hast brought on me and on my kingdom a great sin? thou hast done deeds unto me that ought not to be done.
10And Abimelech said unto Abraham, What sawest thou, that thou hast done this thing?
11And Abraham said, Because I thought, Surely the fear of God is not in this place; and they will slay me for my wife's sake.
12And moreover she is indeed my sister, the daughter of my father, but not the daughter of my mother; and she became my wife:
13and it came to pass, when God caused me to wander from my father's house, that I said unto her, This is thy kindness which thou shalt show unto me: at every place whither we shall come, say of me, He is my brother.
14And Abimelech took sheep and oxen, and men-servants and women-servants, and gave them unto Abraham, and restored him Sarah his wife.
15And Abimelech said, Behold, my land is before thee: dwell where it pleaseth thee.
16And unto Sarah he said, Behold, I have given thy brother a thousand pieces of silver: behold, it is for thee a covering of the eyes to all that are with thee; and in respect of all thou art righted.
17And Abraham prayed unto God: and God healed Abimelech, and his wife, and his maid-servants; and they bare children.
18For Jehovah had fast closed up all the wombs of the house of Abimelech, because of Sarah, Abraham's wife.
What this passage means
At the heart of the chapter is a contrast between Abraham's deception and Abimelech's integrity. Abraham calls Sarah his sister — technically true (she is his half-sister, 20:12) but designed to conceal that she is his wife. Abimelech acts in 'the integrity of my heart and the innocency of my hands' (20:5). God Himself affirms that assessment: 'I know that in the integrity of thy heart thou hast done this' (20:6). The chapter thus turns Abraham's familiar tactic from Genesis 12 against him: there the danger is unnamed; here it is named and resolved.
The chapter also shows God's protective reach extending outside the covenant family. God comes to Abimelech 'in a dream of the night' (20:3) and even restrains him from sin ('I also withheld thee from sinning against me', 20:6). The closing detail — 'Jehovah had fast closed up all the wombs of the house of Abimelech' (20:18) and then healing them in response to Abraham's prayer (20:17) — frames the episode around barrenness and fruitfulness, echoing the broader Sarah narrative.
Finally, Abraham is twice labeled a 'prophet' (20:7) and his prayer is shown to be effective: 'the supplication of the righteous' avails. Abimelech's gifts and the public 'covering of the eyes' given to Sarah (20:16) restore her honor. The chapter ends not with judgment but with reconciliation, fertility restored, and Abraham vindicated as the one through whom blessing comes.
Context
Genesis 20 stands within the Abraham cycle and closely parallels the events of Genesis 12:10–20, where a similar 'she is my sister' episode happens in Egypt. The provided cross-references explicitly link to that earlier chapter (Genesis 12:15–16) and to the later repetition with Isaac and Rebekah in Genesis 26:7, showing that the chapter is part of a recurring narrative pattern rather than an isolated event.
Within the chapter itself, the movement is from deception (20:2) to divine warning (20:3–7), to confrontation (20:8–13), to resolution through gifts, prayer, and restored fertility (20:14–18). The curated note classifies this as a backfilled chapter outside the primary P0/P1 selection, so it is supplied here as reference material rather than as a focal teaching passage.
Key words in the original
- H1642 Glossed 'Gerar', defined as a Philistine city. The name appears in verse 1 ('sojourned in Gerar') and again in verse 2 ('Abimelech king of Gerar'), anchoring the chapter's setting.
- H5045 Glossed 'Negev'. In verse 1, Abraham 'journeyed from thence toward the land of the South', locating the movement within the southern region of the land.
- H6946 Glossed 'Kadesh', defined as a place in the Desert. It is paired with Shur in verse 1 to mark the boundaries of Abraham's sojourn area.
Related verses
- Genesis 12:15 Mirrors the earlier 'she is my sister' episode in Egypt, where Sarah is also 'taken' into a foreign ruler's house. The parallel shows this is a recurring pattern in the Abraham narrative.
- Genesis 26:7 Shows the same tactic reappearing with Isaac and Rebekah. Placing 20 and 26 side by side highlights that the danger — and God's protection — is not a one-time event.
- James 5:16 Echoes the closing scene where Abraham prays and God heals. It connects Abraham's role as a 'prophet' who intercedes (20:7) to the broader New Testament theme that the prayer of a righteous person is effective.
Common questions
Why does Abraham call Sarah his sister again when he already tried this in Genesis 12?
The chapter does not give Abraham's motive beyond his own words in 20:11: 'I thought, Surely the fear of God is not in this place; and they will slay me for my wife's sake.' The text presents it as Abraham's fear-driven strategy repeating itself, with God intervening before harm is done.
Was Abimelech guilty if he did not know Sarah was married?
Abimelech himself claims innocence ('in the integrity of my heart and innocency of my hands', 20:5), and God confirms it: 'I know that in the integrity of thy heart thou has done this; and I also withheld thee from sinning against me' (20:6). Yet God still warns that ignoring the command to restore Sarah would bring death on Abimelech and his household (20:7).
What does it mean that Abraham is called a 'prophet' here?
In verse 7 God tells Abimelech that Abraham 'is a prophet, and he shall pray for thee, and thou shalt live.' This is the first use of the term 'prophet' (Hebrew nāḇîʾ) in the Bible according to the chapter's wording. The label is tied to Abraham's intercessory function: his prayer on behalf of Abimelech's household is what brings healing and restored fruitfulness in 20:17–18.