59 And they sent away Rebekah their sister, and her nurse, and Abraham’s servant, and his men. 60 And they blessed Rebekah, and said unto her, Thou art our sister, be thou the mother of thousands of millions, and let thy seed possess the gate of those which hate them.
I wonder if Laban and Rebekah’s mother realized how appropriate the blessing they gave to Rebekah was. I wouldn’t be surprised if “be thou the mother of thousands of millions” was a generic wish given to every new bride, but in her case it actually became a reality.
Abraham was promised to be a father of many nations, but that covenant only passed on to a single son, Isaac. Thus Isaac and Rebekah bear the full weight of the blessing as well, destined to be the progenitors of an entire nation. Actually, two nations. From Rebekah would come both the Israelite branch and the Edomite, though the covenant heritage would only pass through the former.