Exodus 33:9-11

When Moses went into the Tent, the pillar of cloud would always come down and stay at the entrance of the Tent while the LORD spoke with Moses. Whenever the people saw the pillar of cloud at the entrance of the Tent, they stood and worshiped, each person at the entrance of his own tent. The LORD spoke to Moses face to face as a man speaks with his friend. Then Moses would return to the camp, but Moses’ young helper, Joshua son of Nun, did not leave the Tent.