Exodus 24:13
"And Moses rose up, and his minister Joshua: and Moses went up into the mount of God."
Cross References (ranked by relevance)
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.
And Joshua the son of Nun, the servant of Moses, one of his young men, answered and said, My lord Moses, forbid them.
Now Moses kept the flock of Jethro his father in law, the priest of Midian: and he led the flock to the backside of the desert, and came to the mountain of God, even to Horeb.
And when Joshua heard the noise of the people as they shouted, he said unto Moses, There is a noise of war in the camp.