Kabbalah zu Bamidbar 12:8

And teshuvah is called life: "because from it there are results of life" (Prov. 4:23) - those [results] are Israel's souls.

"A man of good appearance (Heb. מַרְאֶה)." This is, as it is written, "manifestly (Heb. מַרְאֶה), and not in dark speeches" (Num. 12:8). "A man," is, as it is written, "the man of Elohim" (Deut. 33:1). This is the husband of that "appearance," the glory of Hashem (i.e. Malchut). Because he earned the right to lead this grade over the land, as he wished, a feat that no other man had achieved.

If one should ask: Is it not written, “For ye saw no manner of similitude” [Deut. 4:15], the answer would be: Truly, it was granted us to behold him in a given similitude for concerning Moses it is written, “and the similitude of the Lord doth he behold” [Num. 12:8]. Yet the Lord was revealed only in that similitude which Moses saw, and in none other, of any creation formed by His signs. Therefore it stands written: “To whom then will ye liken God? Or what likeness will ye compare unto Him?” [Isa. 40:18].