On the Allegories of the Sacred Laws (2.53-2.57)

And they were both naked, both Adam and his wife, and they were not ashamed; but the serpent was the most subtle of all the beasts that were upon the earth, which the Lord God had made:[*]—the mind is naked, which is clothed neither with vice nor with virtue, but which is really stripped of both: just as the soul of an infant child, which has no share in either virtue or vice, is stripped of all coverings, and is completely naked: for these things are the coverings of the soul, by which it is enveloped and concealed, good being the garment of the virtuous soul, and evil the robe of the wicked soul.

And the soul is made naked in these ways. Once, when it is in an unchangeable state, and is entirely free from all vices, and has discarded and laid aside the covering of all the passions. With reference to this Moses also pitches his tabernacle outside of the camp, a long way from the camp, and it was called the tabernacle of testimony.[*]

And this has some such meaning as this: the soul which loves God, having put off the body and the affections which are dear to it, and having fled a long way from them, chooses a foundation and a sure ground for its abode, and a lasting settlement in

On this account the high priest will not come into the holy of holies clad in a garment reaching to the feet;[*] but having put off the robe of opinion and vain fancy of the soul, and having left that for those who love the things which are without, and who honour opinion in preference to truth, will come forward naked, without colours or any sounds, to make an offering of the blood of the soul, and to sacrifice the whole mind to God the Saviour and Benefactor;

and certainly Nadab and Abihu,[*] who came near to God, and left this mortal life and received a share of immortal life, are seen to be naked, that is, free from all new and mortal opinion; for they would not have carried it in their garments and borne it about, if they had not been naked, having broken to pieces every bond of passion and of corporeal necessity, in order that their nakedness and absence of corporeality might not be adulterated by the accession of atheistical reasonings; for it may not be permitted to all men to behold the secret mysteries of God, but only to those who are able to cover them up and guard them;