Exodus 33:11-12

11The Lord would speak to Moses face to face, the way a person speaks to a friend. Then Moses would return to the camp, but his servant, Joshua son of Nun, a young man, did not leave the tent.

12Moses said to the Lord, “See, you have been saying to me, ‘Bring this people up,’ but you have not let me know whom you will send with me. But you said, ‘I know you by name, and also you have found favor in my sight.’