Afterward his brother came out, and his hand grasped Esau’s heel, so he was named Jacob (one who grabs by the heel, supplanter). Isaac was sixty years old when Rebekah gave birth to them.

All the persons who came with Jacob into Egypt—who were his direct descendants, not counting the wives of [Jacob or] Jacob’s sons, were sixty-six persons in all,

“The blessings of your father
Are greater than the blessings of my ancestors [Abraham and Isaac]
Up to the utmost bound of the everlasting hills;
They shall be on the head of Joseph,
Even on the crown of the head of him who was the distinguished one and the one who is prince among (separate from) his brothers.