Genesis 26:8

“And it came to pass, when he had been there a long time, etc.] Perhaps some years: for though it is in the original, “when days were prolonged to him there” f1417; yet days are sometimes put for years: that Abimelech king of the Philistines looked out at a window; in his own palace, near to which, in all likelihood, were the apartments that Isaac and Rebekah dwelt in; and this he did accidentally, and not out of curiosity, or with any intention to observe or pry into the behaviour and conduct of these two persons one towards the other: and saw, and, behold, Isaac [was] sporting with Rebekah his wife; laughing and joking with her, which by his motions and gestures, and the airs and freedoms…”

“26:8 Abimelech . . . saw Isaac caressing Rebekah: The word for “caressing” (Hebrew metsakheq) is the same as the word used for Ishmael’s “making fun of” Isaac (21:9); the word is related to the name “Isaac” (Hebrew yitskhaq). It is as though Isaac’s lapse of faith made fun of Abimelech and made a mockery of Rebekah and the great promise embodied in Isaac’s name.”