Genesis 20:11

After the destruction of Sodom and Gomorrah, Abraham removed from the grove of Mamre at Hebron to the south country, hardly from the same fear as that which led Lot from Zoar, but probably to seek for better pasture. Here he dwelt between Kadesh (Gen 14:7) and Shur (Gen 16:7), and remained for some time in Gerar, a place the name of which has been preserved in the deep and broad Wady Jurf el Gerr (i.e., torrent of Gerar) about eight miles S.S.E. of Gaza, near to which Rowland discovered the ruins of an ancient town bearing the name of Khirbet el Gerr. Here Abimelech, the Philistine king of Gerar, like Pharaoh in Egypt, took Sarah, whom Abraham had again announced to be his sister, into his harem, - not indeed because he was charmed with the beauty of the woman of 90, which was either renovated, or had not yet faded (Kurtz), but in all probability "to ally himself with Abraham, the rich nomad prince" (Delitzsch). From this danger, into which the untruthful statement of both her husband and herself had brought her, she was once more rescued by the faithfulness of the covenant God. In a dream by night God appeared to Abimelech, and threatened him with death (מת הנּך en te moriturum) on account of the woman, whom he had taken, because she was married to a husband.

We are here returning to the story of Abraham; yet that part of it which is here recorded is not to his honour. The fairest marbles have their flaws, and, while there are spots in the sun, we must not expect any thing spotless under it. The scripture, it should be remarked, is impartial in relating the blemishes even of its most celebrated characters. We have here, I. Abraham's sin in denying his wife, and Abimelech's sin thereupon in taking her (Gen 20:1, Gen 20:2). II. God's discourse with Abimelech in a dream, upon this occasion, wherein he shows him his error (Gen 20:3), accepts his plea (Gen 20:4-6), and directs him to make restitution (Gen 20:7). III. Abimelech's discourse with Abraham, wherein he chides him for the cheat he had put upon him (Gen 20:8-10), and Abraham excuses it as well as he can (Gen 20:11-13). IV. The good issue of the story, in which Abimelech restores Abraham his wife (Gen 20:14-16), and Abraham, by prayer, prevails with God for the removal of the judgment Abimelech was under (Gen 20:17, Gen 20:18).

20:11-13 Abraham’s duplicity was not a momentary loss of faith. Despite the rebuke he received in Egypt, he practiced this strategy wherever he went (cp. 12:12-13). Living by faith requires perseverance.