Matthew Henry on Genesis 20:14–end
Here is, I. The kindness of a prince which Abimelech showed to Abraham. See how unjust Abraham's jealousies were. He fancied that if they knew that Sarah was his wife they would kill him; but, when they did know it, instead of killing him they were kind to him, frightened at least to be so by the divine rebukes they were under. 1. He gives him his royal licence to dwell where he pleased in his country, courting his stay because he gives him his royal gifts (Gen 20:14), sheep and oxen, and (Gen 20:16) a thousand pieces of silver. This he gave when he restored Sarah, either, [1.] By way of satisfaction for the wrong he had offered to do, in taking her to his house: when the Philistines restore…
Read the whole note in the consoleJamieson-Fausset-Brown on Genesis 20:12
yet indeed she is my sister--(See on Gen 11:31). What a poor defense Abraham made. The statement absolved him from the charge of direct and absolute falsehood, but he had told a moral untruth because there was an intention to deceive (compare Gen 12:11-13). "Honesty is always the best policy." Abraham's life would have been as well protected without the fraud as with it: and what shame to himself, what distrust to God, what dishonor to religion might have been prevented! "Let us speak truth every man to his neighbor" [Zac 8:16; Eph 4:25].
Next: Genesis Chapter 21
Adam Clarke on Genesis 20:13
When God caused me to wander - Here the word אלהים Elohim is used with a plural verb, (התעו hithu, caused me to wander), which is not very usual in the Hebrew language, as this plural noun is generally joined with verbs in the singular number. Because there is a departure from the general mode in this instance, some have contended that the word Elohim signifies princes in this place, and suppose it to refer to those in Chaldea, who expelled Abraham because he would not worship the fire; but the best critics, and with them the Jews, allow that Elohim here signifies the true God. Abraham probably refers to his first call.
John Gill on Genesis 20:14
And Abimelech took sheep, and oxen, and menservants, and womenservants, and gave them unto Abraham,.... In a good measure satisfied with what Abraham had said to excuse himself; and these gifts he gave unto him, that he might, as Jarchi observes, pray and intercede for him, that he and his family might be healed, having understood by the divine oracle that he was a prophet, and if he prayed for him he would be restored to health: and these were not given to bribe him to give his consent that Sarah might be continued with him, since it follows:
and restored him Sarah his wife; untouched by him, as he was directed by God to do.