'Cloud' in the Bible

and as he was speaking these things, there came a cloud, and overshadowed them, and they feared in their entering into the cloud,

and a voice came out of the cloud saying, 'This is My Son -- the Beloved; hear ye him;'

And he said also to the multitudes, 'When ye may see the cloud rising from the west, immediately ye say, A shower doth come, and it is so;

'And then they shall see the Son of Man, coming in a cloud, with power and much glory;