There came a (bright, luminous) cloud, overshadowing them — This seems to have been such a cloud of glory as accompanied Israel in the wilderness, which, as the Jewish writers observe, departed at the death of Moses. But it now appeared again, in honour of our Lord, as the great Prophet of the Church, who was prefigured by Moses. Hear ye him — Even preferably to Moses and Elijah.
Related Commentaries of Mark 9:7
Mark 9:7
7 And there was a cloud that overshadowed them: and a voice came out of the cloud, saying, This is my beloved Son: hear him.