In the Aramaic of that period, the term "son of man" simply meant "an ordinary man" or "an ordinary human being". It also had a specific prophetic meaning. Even in Hebrew is means the same thing.
Look as the passage in the Old Testament Book, of Daniel (7:13-14):
"In my vision at night I looked, and there before me was one like a son of man, coming with the clouds of heaven. He approached the Ancient of Days and was led into his presence. He was given authority, glory and sovereign power; all peoples, nations and men of every language worshiped him. His dominion is an everlasting dominion that will not pass away, and his kingdom is one that will never be destroyed."
In this passage Daniel is using "son of man" as a name for the Messiah.
The good news is that Daniel's vision was fulfilled. This ordinary man, the Son of Man, the Messiah, ascended to his Father, the only true God, to the Ancient of Days and established and rules today the Kingdom of his Father, over heaven and earth. And as a believer, part of the body of this son of man and the Christ, I'm part of this same Kingdom today, on earth. Amen