'Pillar' in the Bible

Yahweh came down in a pillar of cloud, and stood at the door of the Tent, and called Aaron and Miriam; and they both came forward.

and they will tell it to the inhabitants of this land. They have heard that you Yahweh are in the midst of this people; for you Yahweh are seen face to face, and your cloud stands over them, and you go before them, in a pillar of cloud by day, and in a pillar of fire by night.