And it came to pass, when he had been there a long time, that Abimelech king of the Philistines looked out at a window, and saw, and, behold, Isaac was sporting with Rebekah his wife.
8. Abimelech, king of the Philistines, looked out at a window. Truly admirable is the kind forbearance of God, in not only condescending to pardon the twofold fault of his servant, but in stretching forth his hand, and in wonderfully averting, by the application of a speedy remedy, the evil which he would have brought upon himself.
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 called Isaac,.... Sent a messenger to desire him to come to him: and said, behold, of a surety she is thy wife: and then perhaps told him of what he had observed that passed between them; which was a clear proof that they must be man and wife, or he would never have took such liberties with her: and how saidst thou, she is my sister?