https://www.gutenberg.org/files/2850/2850-h/2850-h.htm Please go to this link and read on the destruction of Jerusalem during the Jewish Roman war. This book which was written by Josephus who was alive during the war he wrote down the horrible transactions that took place. This confirms Jesus and his disciples promise that Jesus would return in their lifetime and in their generation . It was a coming in the clouds of judgment using the Roman armies. God came many times in the Old Testament with clouds symbolizing his presence. He would stir up another nation's army to judge whatever nation he was upset with.