Numbers 9:14,15

A stranger Who is a proselyte. Namely, the tent of the testimony Or, the tabernacle above the tent of the testimony; that is, that part of the tabernacle in which was the testimony, or the ark of the testimony; for there the cloudy pillar stood. This was an evident token of God's special presence with, and providence over them. And this cloud was easily distinguished from other clouds, both by its peculiar figure, and by its constant residence in that place. Fire That they might better discern it, and direct themselves and their journeys or stations by it. Had it been a cloud only, it had scarce been visible by night: and had it been a fire only, it would have scarce been discernible by day. But God was pleased to give them sensible demonstrations that he kept them night and day.