So Abimelech called Isaac and said, “Behold, she is your wife. How then could you say, ‘She is my sister’?” Isaac said to him, “Because I thought, ‘Lest I die because of her.’”
Isaac had now laid aside all thoughts of going to Egypt, and, in obedience to the heavenly vision, sets up his staff in Gerar, the country in which he was born (Gen 26:6), yet there he enters into temptation, the same temptation that his good father had been once and again surprised and overcome by, namely, to deny his wife, and to give out that she was his sister.
Commenting on Genesis 26:6-11
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?
Gen 26:6-11 Protection of Rebekah at Gerar. - As Abraham had declared his wife to be his sister both in Egypt and at Gerar, so did Isaac also in the latter place. But the manner in which God protected Rebekah was very different from that in which Sarah was preserved in both instances.
Commenting on Genesis 26:6-11