Genesis 12:10

7 And Jehovah appeared unto Abram, and said, Unto thy seed will I give this land: and there builded he an altar unto Jehovah, who appeared unto him.

8 And he removed from thence unto the mountain on the east of Beth-el, and pitched his tent, having Beth-el on the west, and Ai on the east: and there he builded an altar unto Jehovah, and called upon the name of Jehovah.

9 And Abram journeyed, going on still toward the South.

10 And there was a famine in the land: and Abram went down into Egypt to sojourn there; for the famine was sore in the land.

11 And it came to pass, when he was come near to enter into Egypt, that he said unto Sarai his wife, Behold now, I know that thou art a fair woman to look upon:

12 and it will come to pass, when the Egyptians shall see thee, that they will say, This is his wife: and they will kill me, but they will save thee alive.

13 Say, I pray thee, thou art my sister; that it may be well with me for thy sake, and that my soul may live because of thee.