“But whenever he went into the Tent of Meeting to speak with the Lord, he would remove the veil until he came out again. Then he would give the people whatever instructions the Lord had given him, and the people of Israel would see the radiant glow of his face. So he would put the veil over his face until he returned to speak with the Lord” (Exodus 34:34-35, NLT).
When Moses came down from Mt. Sinai (for the second time) with God’s commandments etched on stone tablets, the skin on his face was radiant from God’s glory because he talked with God face to face.