The next "generations of" heading -- Jacob's, not a rejected brother's -- the formula's final and permanent turn toward the chosen line.
Now this is the history of the generations of Esau (that is, Edom).
This is the history of the generations of Jacob. Joseph, being seventeen years old, was feeding the flock with his brothers. He was a boy with the sons of Bilhah and Zilpah, his father’s wives. Joseph brought an evil report of them to their father.
No commentary yet for this passage — the library is still growing here.