Preview: The “sibling swap” Rivkah orchestrates against Yitzchak is simply a version of the very same ruse he had orchestrated a chapter earlier, against Avimelech. In fact, all of the major stories from sefer Bereshit through the beginning of sefer Shemot may have their roots in the ruse that the patriarchs pulled on Avimelech/Pharaoh – and the literary links are there to demonstrate it.