Bible source http://kingjbible.com/genesis/26.htm
Skeptic annotated bible source http://www.skepticsannotatedbible.com/gen/26.html
A trick that works will work all the time, right?
In Genesis 12, Abram (later became Abraham) lied about his wife, telling the Egyptian King that his wife Sarai (later became Sarah) was his sister.
In Genesis 20, Abraham used the same trick to Abimelech king of Gerar.
Both times, with the threats of god, Abraham benefited and got his wife back:
[Genesis 12, he entreated Abram well for her sake: and he had sheep, and oxen, and he asses, and menservants, and maidservants, and she asses, and camels.
Genesis 20, Abimelech took sheep, and oxen, and menservants, and womenservants, and gave them unto Abraham,]
In this chapter, Isaac, Abraham's son used the same trick again. 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.
Fair enough, for fear of your own death to lie about the real nature of your wife. But did the people kill him upon knowing the fact? No. So that's a precaution only.
When the king found out, this righteous king ordered his people not to touch this woman.
Now, compare the treatment of them from god. Did god ever bless the king? No! Ah, this god is Jew's god! Not god for everyone!