The verse (Genesis 3:21). "And the Lord God made garments of skin for Adam and his wife, and clothed them." It would seem to represent the glory of God had departed previously being in the very presence of God who is Light. Not having the glow that Moses had when in the presence. he covered it with a veil. They like Adam and Eve saw their nakedness' and desired Moses cover the glory of God .
2 Cor. 13
And not as Moses, which put a veil over his face, that the children of Israel could not stedfastly look to the end of that which is abolished: