And the men of the place asked him about his wife; and he said, She is my sister: for he feared to say, She is my wife; lest, said he, the men of the place should kill me for Rebekah; because she was fair to look upon.
All Commentaries on Genesis 26:7 Go To Genesis 26
George Leo Haydock
AD 1849
Sister, or niece. Though lawful at that time, it was not very common for people to marry such near relations; and therefore Isaac, by saying Rebecca was his sister, wished the people of Gerara to be ignorant of her being his wife; being under the like apprehension as his father had been twice before. He imitates his example, trusting in the protection of God, which had rescued Abraham from danger, chap. xxi. (Haydock)