Clouds are closely connected to those times when God reveals himself.
Moses encountered clouds when God gave him the law at the top of Mount Sinai. The morning Jesus was crucified, a dark cloud appeared, but out of that dark cloud of despair came life on Easter. But the most significant cloud in of all history is the one that received Jesus when He ascended after His resurrection from the dead
Christian pastor and author Jamie Buckingham explains the connection between God and clouds in this video devotional: