'Cloud' in the Bible

Then I saw another powerful angel come down from heaven. He was dressed in a cloud, and there was a rainbow over his head. His face was like the sun, and his legs were like columns of fire.

Then the witnesses heard a loud voice from heaven calling to them, "Come up here!" So they went up to heaven in a cloud, and their enemies watched them.

Then I looked, and there was a white cloud! On the cloud sat someone who was like the Son of Man, with a gold victor's crown on his head and a sharp sickle in his hand.

Another angel came out of the Temple, crying out in a loud voice to the one who sat on the cloud, "Swing your sickle, and gather the harvest, for the hour has come to gather it, because the harvest of the earth is fully ripe."

The one who sat on the cloud swung his sickle across the earth, and the earth was harvested.