Kabbalah zu Bereschit 33:20

We have already explained that wherever it is written, "He called," (without saying to whom), it is the lower grade, (the Nukvah) as it is written, "And called Moses" (Vayikra 1:1). (the Nukvah called Moses). And here it is written, "and he called his name 'Jacob'" (Gen. 25:26). For no man even named Jacob, as it is written elsewhere, "And called it (lit. 'him') El the Elohim Yisrael" (Gen. 33:20). This is the Holy One, blessed be He, who called Jacob 'El'. He said to him: 'I am El among the upper, and you are El among the lower.'