קבלה אויף שמות 33:20

Jacob arrived at the prophecy of "and...lived" only in Egypt. It was an excellent prophecy, the like of which was never prophesied before. None of the prophets was worthy of it except for him and Moses. It is written of Moses, "For no man shall see Me, and live" (Shemot 33:20). Of Jacob, it is written, "And Jacob lived", the prophecy which descends from the shining mirror.

Nevertheless, I will explain their levels in general. Our teacher Moshe, peace be upon him, would ascend all the way to the world of Emanation-Atzilut, and from there he saw. However, even his perception was only of the world of Emanation-Atzilut as it becomes garbed in the world of Creation-Briyah, and this too, he only saw in a passing manner. For, to grasp the world of Emanation-Atzilut itself is impossible, which is the inner meaning of the verse,⁸⁹⁹Exodus 33:20 “For no man can see Me and live.” The other prophets, on the other hand, would only see the world of Emanation-Atzilut through its complete manifestation within the lights of the world of Creation-Briyah.