Exodus 24:12-15

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. And Moses rose up, and Joshua his minister: and Moses went up into the mount of God. And he said unto the elders, Tarry ye here for us, until we come again unto you: and, behold, Aaron and Hur are with you: whosoever hath a cause, let him come near unto them. And Moses went up into the mount, and the cloud covered the mount.