What does Genesis 26:7 mean?

and the men of the place asked him of his wife; and he said, She is my sister: for he feared to say, My wife; lest, said he, the men of the place should kill me for Rebekah; because she was fair to look upon.

And the men of the place asked him of his wife; and he said, She is my sister: for he feared to say, She is my wife; lest, said he, the men of the place should kill me for Rebekah; because she was fair to look upon.

and the men of the place asked him of his wife; and he said, She is my sister: for he feared to say, My wife; lest, said he, the men of the place should kill me for Rebekah; because she was fair to look upon.

And when he was questioned by the men of the place about his wife, he said, She is my sister; fearing to say, She is my wife; for, he said, the men of the place may put me to death on account of Rebekah; because she is very beautiful.

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

And when he was asked by the men of that place, concerning his wife, he answered: She is my sister: for he was afraid to confess that she was his wife, thinking lest perhaps they would kill him because of her beauty.

And the men of the place asked about his wife. And he said, She is my sister; for he feared to say, my wife, [saying to himself,] Lest the men of the place slay me on account of Rebecca — because she was fair in countenance.