When the men of that place asked about his wife, Isaac answered, “She’s my sister.” He was afraid to say “my wife.” He thought that the men of that place would kill him to get Rebekah, because she was an attractive woman.
So he changed his behavior ⌞when he was⌟ in their presence and acted insane ⌞as long as he was⌟ under their authority. He scribbled on the doors of the city gate and let his spit run down his beard.