Son of Man

The prophecy of the Messiah by the prophet Daniel:
As I kept watching, thrones were set in place, and the Ancient of Days took His seat. His clothing was white like snow, and the hair of His head like whitest wool. His throne was flaming fire; its wheels were blazing fire. A river of fire was flowing, coming out from His presence. Thousands upon thousands served Him; ten thousand times ten thousand stood before Him. The court was convened, and the books were opened.

I watched, then, because of the sound of the arrogant words the horn was speaking. As I continued watching, the beast was killed and its body destroyed and given over to the burning fire. As for the rest of the beasts, their authority to rule was removed, but an extension of life was granted to them for a certain period of time.

I continued watching in the night visions, and I saw One like a son of man coming with the clouds of heaven. He approached the Ancient of Days and was escorted before Him. He was given authority to rule, and glory, and a kingdom; so that those of every people, nation, and language should serve Him. His dominion is an everlasting dominion that will not pass away, and His kingdom is one that will not be destroyed. (Daniel 7:9-14 HCSB)

The confirmation by Jesus before the high priest that He is indeed the One prophesied by Daniel:
But Jesus kept silent. Then the high priest said to Him, "By the living God I place You under oath: tell us if You are the Messiah, the Son of God!"

"You have said it," Jesus told him. "But I tell you, in the future you will see the Son of Man seated at the right hand of the Power and coming on the clouds of heaven."

Then the high priest tore his robes and said, "He has blasphemed! Why do we still need witnesses? Look, now you’ve heard the blasphemy! What is your decision?" They answered, "He deserves death!" (Matthew 26:63-66 HCSB)

Apostle John's vision of the risen Jesus Christ, the Son of Man and Ancient of Days:
I turned to see whose voice it was that spoke to me. When I turned I saw seven gold lampstands, and among the lampstands was One like the Son of Man, dressed in a long robe and with a gold sash wrapped around His chest. His head and hair were white like wool - white as snow - and His eyes like a fiery flame. His feet were like fine bronze as it is fired in a furnace, and His voice like the sound of cascading waters. He had seven stars in His right hand; a sharp double-edged sword came from His mouth, and His face was shining like the sun at midday.

When I saw Him, I fell at His feet like a dead man. He laid His right hand on me and said, "Don’t be afraid! I am the First and the Last, and the Living One. I was dead, but look - I am alive forever and ever, and I hold the keys of death and Hades. Therefore write what you have seen, what is, and what will take place after this. (Revelation 1:12-19 HCSB)