It came about when Moses was coming down from Mount Sinai (and the two tablets of the testimony were in Moses’ hand as he was coming down from the mountain), that Moses did not know that the skin of his face shone because of his speaking with Him.

Exodus 34: 29 (KJV)
There is a golden, sunlit
redemptive hue in the
mind, heart, soul, and
face of every true believer.