Exodus:24:1-2
rsv@Exodus:24:1 @ And he said to Moses, "Come up to the LORD, you and Aaron, Nadab, and Abi'hu, and seventy of the elders of Israel, and worship afar off.
rsv@Exodus:24:2 @ Moses alone shall come near to the LORD; but the others shall not come near, and the people shall not come up with him."