Adam Clarke's Bible Commentary Verse 5. In the integrity of my heart, &c.] Had Abimelech any other than honourable views in taking Sarah, he could not have justified himself thus to his Maker; and that these views were of the most honourable kind, God himself, to whom the appeal was made, asserts in the most direct manner, Yea, I know that thou didst this in the integrity of thy heart.
Matthew Henry Commentary
Verses 1-8 - Crooked policy will not prosper: it brings ourselves and others int danger. God gives Abimelech notice of his danger of sin, and his dange of death for his sin. Every wilful sinner is a dead man, but Abimelec pleads ignorance. If our consciences witness, that, however we may have been cheated into a snare, we have not knowingly sinned against God, it will be our rejoicing in the day of evil. It is matter of comfort to those who are honest, that God knows their honesty, and wil acknowledge it. It is a great mercy to be hindered from committing sin of this God must have the glory. But if we have ignorantly done wrong that will not excuse us, if we knowingly persist in it. He that doe wrong, whoever he is, prince or peasant, shall certainly receive for the wrong which he has done, unless he repent, and, if possible, make restitution.
Original Hebrew הלא3808 הוא1931 אמר559 לי אחתי269 הוא1931 והיא1931 גם1571 הוא1931 אמרה559 אחי251 הוא1931 בתם8537 לבבי3824 ובנקין5356 כפי3709 עשׂיתי6213 זאת׃2063