And when very many days had passed, and he had remained in the same place, Abimelech, king of the Palestinians, gazing through a window, saw him being playful with Rebekah, his wife
Other versions
King James Version
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.English Standard Version
When he had been there a long time, Abimelech king of the Philistines looked out of a window and saw Isaac laughing with Rebekah his wife.New International Version
When Isaac had been there a long time, Abimelech king of the Philistines looked down from a window and saw Isaac caressing his wife Rebekah.