6 And Isaac dwelt at Gerar. 7 And the men of the place asked about his wife. And he said, She is my sister; for he feared to say, my wife, [saying to himself,] Lest the men of the place slay me on account of Rebecca—because she was fair in countenance.
Matthew Henry's Commentary on Genesis 26:6-7
Commentary on Genesis 26:6-11
(Read Genesis 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.