Exodus 33:9-11

33:9 And whenever Moses entered the tent, the pillar of cloud would descend and stand at the entrance of the tent, and the Lord would speak with Moses. 33:10 When all the people would see the pillar of cloud standing at the entrance of the tent, all the people, each one at the entrance of his own tent, would rise and worship. 33:11 The 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.