Exodus 34:29

26 Take the first-fruits of your land as an offering to the house of the Lord your God. Let not the young goat be cooked in its mother's milk

27 And the Lord said to Moses, Put all these words in writing; for on them is based the agreement which I will make with you.

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.