Genesis 20

Abraham traveled from there toward the land of the South, and lived between Kadesh and Shur. He lived as a foreigner in Gerar.

Abraham said about Sarah his wife, “She is my sister.” Abimelech king of Gerar sent, and took Sarah.

But God came to Abimelech in a dream of the night, and said to him, “Behold, you are a dead man, because of the woman whom you have taken; for she is a man’s wife.”

Now Abimelech had not come near her. He said, “Lord, will you kill even a righteous nation?

Didn’t he tell me, ‘She is my sister’? She, even she herself, said, ‘He is my brother.’ I have done this in the integrity of my heart and the innocence of my hands.”

God said to him in the dream, “Yes, I know that in the integrity of your heart you have done this, and I also withheld you from sinning against me. Therefore I didn’t allow you to touch her.

Now therefore, restore the man’s wife. For he is a prophet, and he will pray for you, and you will live. If you don’t restore her, know for sure that you will die, you, and all who are yours.”

Abimelech rose early in the morning, and called all his servants, and told all these things in their ear. The men were very scared.

Then Abimelech called Abraham, and said to him, “What have you done to us? How have I sinned against you, that you have brought on me and on my kingdom a great sin? You have done deeds to me that ought not to be done!”

Abimelech said to Abraham, “What did you see, that you have done this thing?”

Abraham said, “Because I thought, ‘Surely the fear of God is not in this place. They will kill me for my wife’s sake.’

Besides, she is indeed my sister, the daughter of my father, but not the daughter of my mother; and she became my wife.

When God caused me to wander from my father’s house, I said to her, ‘This is your kindness which you shall show to me. Everywhere that we go, say of me, “He is my brother.”’”

Abimelech took sheep and cattle, male servants and female servants, and gave them to Abraham, and restored Sarah, his wife, to him.

Abimelech said, “Behold, my land is before you. Dwell where it pleases you.”

To Sarah he said, “Behold, I have given your brother a thousand pieces of silver. Behold, it is for you a covering of the eyes to all that are with you. In front of all you are vindicated.”

Abraham prayed to God. So God healed Abimelech, his wife, and his female servants, and they bore children.

For the LORD had closed up tight all the wombs of the house of Abimelech, because of Sarah, Abraham’s wife.

Chapter overviewAI-generated

Overview.
This chapter records a pivotal episode in Abraham’s journey, where fear leads him to misrepresent Sarah as his sister while sojourning in Gerar under Abimelech’s rule. Divine intervention prevents a greater sin and affirms Abraham’s role as a prophet, preserving God’s covenant purposes despite human failure. It underscores God’s sovereign protection of His promises amid moral weakness.

Flow.

Abraham relocates to the Negev and repeats his half-truth about Sarah being his sister, resulting in her being taken by Abimelech.
God warns Abimelech in a dream, asserting that Sarah is married and that judgment awaits unless she is restored.
Abimelech protests his innocence, having acted in good faith, and is instructed to return Sarah and seek Abraham’s intercession.
After restitution is made, Abraham prays for Abimelech, and God lifts the judgment that had closed the wombs in his household.

Connections.
Following chapter 19, which portrays the judgment on Sodom and the moral failings of Lot’s family, chapter 20 continues the theme of human frailty even among the elect, shifting focus back to Abraham’s own lapse in faith. Like Lot’s daughters, Abraham acts out of fear rather than trust, though God still guards the covenant line. The episode prepares for chapter 21, where Isaac’s birth becomes the answer to divine faithfulness in spite of surrounding unbelief and moral failure, showing that God’s promises do not depend on human perfection.

What it teaches.
God remains faithful to His covenants even when His people fail morally or ethically (WCF 7.1–2). Though Abraham lied out of fear, God protected Sarah and the future of the promised seed, demonstrating His sovereign control over nations and individuals (WCF 3.7; HC LD 10). Abimelech’s plea of integrity (v. 5) reflects the light of natural knowledge of right and wrong (Rom. 2:14–15; WCF 7.2), yet only Abraham, the prophet, can mediate healing through prayer (v. 7), pointing to the necessity of covenantal revelation. The closure of wombs (v. 18) and their opening after prayer (v. 17) displays God’s authority over life and fertility, a theme central to the coming birth of Isaac, and echoes God’s power affirmed in the creeds (Nicene Creed: “Maker of heaven and earth, of all things visible and invisible”).

Apply.
When fear tempts you to conceal the truth, remember that God defends His name and purposes even when your faith falters.

AI-generated. Not a substitute for Scripture, your pastor, or the confessions.