Verse 10. - And Abimelech said, What is this thou hast done unto us? one of the people might lightly have lain with thy wife, - literally, within a little (cf. Psalm 73:2; Psalm 119:87) one of the people might have lain with thy wife - and thou shouldest - i.e. (within a little) thou mightest - have brought (or caused to come) guiltiness upon us (cf. Genesis 20:9, where חַטָּאָה is used instead of אָשָׁם).

26:6-11 There is nothing in Isaac's denial of his wife to be imitated, nor even excused. The temptation of Isaac is the same as that which overcame his father, and that in two instances. This rendered his conduct the greater sin. The falls of those who are gone before us are so many rocks on which others have split; and the recording of them is like placing buoys to save future mariners. This Abimelech was not the same that lived in Abraham's days, but both acted rightly. The sins of professors shame them before those that are not themselves religious.And Abimelech said, what is this thou hast done unto us?.... By entertaining suspicions and jealousies of us as bad men, and by exposing us to the temptation of committing iniquity; why hast thou dealt thus with us, and what have we done, or is in our character, that thou shouldest act after this manner?

one of the people might lightly have lien with thy wife; it is much one or other had not before this time, not looking upon it criminal to have to do with a single woman, when they would not have meddled with another man's wife, Jarchi interprets this of Abimelech himself; and so the Targum of Jonathan, who perhaps had been thinking of taking her to his bed; and was "within a little" (c), as the word for "lightly" may be rendered, of accomplishing his design:

and thou shouldest have brought guiltiness upon us: been the occasion of their committing the sin of adultery, which was heinous in the eyes of Heathens, and of bringing on them the punishment due thereunto.

(c) "parum abfuit", Junius & Tremellius, Piscator, Schmidt.