He put a veil over his face.

Exodus 34:27-30, Then the LORD said to Moses, “Write down these words, for in accordance with these words I have made a covenant with you and with Israel.” So he was there with the LORD forty days and forty nights; he did not eat bread or drink water. And he wrote on the tablets the words of the covenant, the Ten Commandments. And 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. So when Aaron and all the sons of Israel saw Moses, behold, the skin of his face shone, and they were afraid to come near him. Then Moses called to them, and Aaron and all the rulers in the congregation returned to him; and Moses spoke to them. And afterward all the sons of Israel came near, and he commanded them to do everything that the LORD had spoken to him on Mount Sinai. When Moses had finished speaking with them, he put a veil over his face. But whenever Moses went in before the LORD to speak with Him, he would take off the veil until he came out; and whenever he came out and spoke to the sons of Israel what he had been commanded, the sons of Israel would see the face of Moses, that the skin of Moses’ face shone. So Moses would replace the veil over his face until he went in to speak with Him.

Paul explains this fear of the people as hardness of heart towards the Lord. In Christ this veil is removed, and His glory can be seen. It’s as if the people were afraid of the glory of the Lord even through the mirror of Moses face! We can come before Him with unveiled faces, as Paul says, to be transformed by His Spirit “from glory to glory.”

Show us Your glory; transform us by Your glory by Your Spirit, Lord.