Genesis 26:9
King James Version
“And Abimelech called Isaac, and said, Behold, of a surety she thy wife: and how saidst thou, She my sister? And Isaac said unto him, Because I said, Lest I die for her.”
Context
6And Isaac dwelt in Gerar:
7And the men of the place asked of his wife; and he said, She my sister: for he feared to say, my wife; lest, the men of the place should kill me for Rebekah; because she fair to look upon.
8And 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 sporting with Rebekah his wife.
9And Abimelech called Isaac, and said, Behold, of a surety she thy wife: and how saidst thou, She my sister? And Isaac said unto him, Because I said, Lest I die for her.
10And Abimelech said, What this thou hast done unto us? one of the people might lightly have lien with thy wife, and thou shouldest have brought guiltiness upon us.
11And Abimelech charged all people, saying, He that toucheth this man or his wife shall surely be put to death.
12Then Isaac sowed in that land, and received in the same year an hundredfold: and the LORD blessed him.