Page 549 - BERESHIT

Yaakov thought that Yosef would be greater than his brothers in the realm
of Torah. He hoped that Yosef would become a ‘king’ of Torah, a talmid
chacham of great caliber. This is how Yaakov interpreted Yosef’s dreams.

Lavan wanted to cause Yaakov and his progeny spiritual harm by making
him marry maidservants. Yaakov knew that it was a ruse. The Divine
presence and spiritual closeness that Rachel and Leah had, were
transferred over to Bilhah and Zilpah after they passed away.

Similarly, the spiritual accomplishments of Yaakov and his victory over
the Angel of Eisav, was inherited by his children. This is what gives us
the strength to conquer the Yetzer Hara.