Exodus 34:32-35

32And afterwards, all the children of Israel came near; and he gave them in commandment all that Jehovah had spoken with him on mount Sinai. 33And Moses ended speaking with them; and he had put on his face a veil. 34And when Moses went in before Jehovah to speak with him, he took the veil off, until he came out; and he came out, and spoke to the children of Israel what he was commanded. 35And the children of Israel saw the face of Moses, that the skin of Moses' face shone; and Moses put the veil on his face again, until he went in to speak with him.