Kabbalah zu Wajikra 26:42

Rabbi Ya'akov said in the name of Rabbi Chiya, Jacob, the Patriarch, is the Throne of Glory. And the teachings of Elijah also state, Jacob the Patriarch is a Throne by himself, as it is written, "Then will I remember my covenant with Jacob" (Vayikra 26:42). The Holy One, blessed be He, established a covenant with Jacob alone, more than (the one He established) with all his fathers. He made him a Throne of Glory distinguishing him from his predecessors. And the reason is that his forefathers, who are Abraham and Isaac, are not able to shine without him. Therefore, he in himself includes their Lights as well as his own, and thus becomes a Throne to himself.