'Cloud' in the Bible

I saw another strong angel coming down out of heaven, clothed with a cloud; and the rainbow was upon his head, and his face was like the sun, and his feet like pillars of fire;

And they heard a loud voice from heaven saying to them, “Come up here.” Then they went up into heaven in the cloud, and their enemies watched them.

Then I looked, and behold, a white cloud, and sitting on the cloud was one like a son of man, having a golden crown on His head and a sharp sickle in His hand.

And another angel came out of the temple, crying out with a loud voice to Him who sat on the cloud, “Put in your sickle and reap, for the hour to reap has come, because the harvest of the earth is ripe.”

Then He who sat on the cloud swung His sickle over the earth, and the earth was reaped.