Exodus 33:7
The Presence of the Lord
33:7 Moses took the tent and pitched it outside the camp, at a good distance from the camp, and he called it the tent of meeting. Anyone seeking the Lord would go out to the tent of meeting that was outside the camp.
Exodus 16:13
16:13 In the evening the quail came up and covered the camp, and in the morning a layer of dew was all around the camp.
Exodus 29:14
29:14 But the meat of the bull, its skin, and its dung you are to burn up
outside the camp.
It is the purification offering.