Exodus 34:31

28 And for forty days and forty nights Moses was there with the Lord, and in that time he had no food or drink. And he put in writing on the stones the words of the agreement, the ten rules of the law.

29 Now when Moses came down from Mount Sinai, with the two stones in his hand, he was not conscious that his face was shining because of his talk with God.

30 But when Aaron and all the children of Israel saw Moses, and the shining of his face, they would not come near him for fear.

31 Then Moses sent for them; and Aaron, with the chiefs of the people, came to him; and Moses had talk with them.

32 And later, all the children of Israel came near, and he gave them all the orders which the Lord had given him on Mount Sinai.

33 And at the end of his talk with them, Moses put a veil over his face.

34 But whenever Moses went in before the Lord to have talk with him, he took off the veil till he came out. And whenever he came out he said to the children of Israel what he had been ordered to say;