Jamieson, Fausset and Brown on Exodus 33:7

7. Moses took the tabernacle, and pitched it without the camp--Not the tabernacle, of which a pattern had been given him, for it was not yet erected, but his own tent--conspicuous as that of the leader--in a part of which he heard cases and communed with God about the people's interests; hence called "the tabernacle of the congregation," and the withdrawal of which, in abhorrence from a polluted camp, was regarded as the first step in the total abandonment with which God had threatened them.