English: The reason I command you to say ‘my sister,’ and do not go further and have you say he is a stranger… is ‘so that it may go well with me’ — if he were a stranger there would be no reason for them to treat him well for her sake.
Context: The sister-claim is calibrated: close enough to generate benefit, not so distant as to erase it.
What Is Learned
The chosen cover preserves both survival and potential favor.