Exodus 24:1-2, 12

Then He said to Moses, “Come up to the LORD, you and Aaron, Nadab and Abihu and seventy of the elders of Israel, and you shall worship at a distance. Moses alone, however, shall come near to the LORD, but they shall not come near, nor shall the people come up with him.”

Now the LORD said to Moses, “Come up to Me on the mountain and remain there, and I will give you the stone tablets with the law and the commandment which I have written for their instruction.”