'Cloud' in the Bible

Who goes before you on your way, looking for a place where you may put up your tents, in fire by night, lighting up the way you are to go, and in a cloud by day.

These words the Lord said to all of you together on the mountain, out of the heart of the fire, out of the cloud and the dark, with a great voice: and he said no more; he put them in writing on the two stones of the law and gave them to me.

And the Lord was seen in the Tent in a pillar of cloud resting by the door of the Tent.