Genesis 26:5-7

Young's Literal Translation

⁵ because that Abraham hath hearkened to My voice, and keepeth My charge, My commands, My statutes, and My laws.'

⁶ And Isaac dwelleth in Gerar;

⁷ and men of the place ask him of his wife, and he saith, `She [is] my sister:' for he hath been afraid to say, `My wife -- lest the men of the place kill me for Rebekah, for she [is] of good appearance.'