Exodus 24:1, 9, 12

And he said unto Moses, Come up unto Jehovah, thou, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel; and worship ye afar off

Then went up Moses, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel

And Jehovah said unto Moses, Come up to me into the mount, and be there: and I will give thee the tables of stone, and the law and the commandment, which I have written, that thou mayest teach them.