And Moses rose up, and his minister Joshua: and Moses went up into the mount of God.

So Moses set out with Joshua his attendant and went up on the mountain of God.

And the LORD spake unto Moses face to face, as a man speaketh unto his friend. And he turned again into the camp: but his servant Joshua, the son of Nun, a young man, departed not out of the tabernacle.

Thus the LORD would speak to Moses face to face, as a man speaks to his friend. Then Moses would return to the camp, but his young assistant Joshua son of Nun would not leave the tent.