Exodus 34:27

24 For I will drive out nations before you and enlarge your borders; neither shall any man desire your land when you go up to appear before the LORD, your God, three times in the year.

25 “You shall not offer the blood of my sacrifice with leavened bread. The sacrifice of the feast of the Passover shall not be left to the morning.

26 “You shall bring the first of the first fruits of your ground to the house of the LORD your God. “You shall not boil a young goat in its mother’s milk.”

27 The LORD said to Moses, “Write these words; for in accordance with these words I have made a covenant with you and with Israel.”

28 He was there with the LORD forty days and forty nights; he neither ate bread, nor drank water. He wrote on the tablets the words of the covenant, the ten commandments.

29 When Moses came down from Mount Sinai with the two tablets of the covenant in Moses’ hand, when he came down from the mountain, Moses didn’t know that the skin of his face shone by reason of his speaking with him.

30 When Aaron and all the children of Israel saw Moses, behold, the skin of his face shone; and they were afraid to come near him.