has anybody answered the question why Jesus the Christ is called the son of MAN when Joseph was not involved? why marys' geneology is ended in a male ancestor? MAN like in mankind?
The common understanding is that "Son of God" implies Jesus' deity, and that "Son of Man" implies his humanity.
Yes, Jesus was a son of a human being, Mary. Calling Jesus "Son of Man" is not a reference to Joseph at all. It just states the understanding that Jesus is both divine and human - two nature, one person. Even JWs would agree to a point. They will say that Jesus was both angel and human. Sound like a leaning towards the Trinity...huh?
But the more important insight is that the term "Son of Man" doesn't merely just align him with humanity. It's a direct reference to Daniel 7, where it describes the Son of Man as a very exalted figure, not just a human figure.
If you do a study of the term "Son of Man" in the Gospels, you'll see that Jesus referred to Himsels as "Son of Man" far more often than He did "Son of God".
It was an interesting thing for Him to do. On the surface "Son of Man" is just an ordinary phrase for "human being". He was born a human. There wouldn't necessarily be any offense to this term. I am a son of man just as all of you are. But to the Jewish leaders, when they heard "Son of Man" they immediately would have thought of Daniel 7. They would have seen that by Jesus using this title, he was claiming to be a fulfillment of OT prophecy. The Jews also knew (correctly) that any mention of "Son of" was a reference to ones nature. That is why when Jesus said He was the Son of God, the Jews (correctly) said that He was therefore making Himself equal to God. My sons nature is equal to that of mine. I'm his head, but our nature is the same. Jesus nature is equal to that of the Father. The Father is His head, but their nature is the same. ETERNAL.
Jesus was subtle in that he was always opening his identity to those that wanted to see it, but he wasn't opening it so blatantly that everone would come and make Him king. He didn't just openly say, "I am the Messiah! I am the King of the World. Come and acknowledge me as King".
The phrase "Son of Man" was a genious move of Jesus to show WHO He was, but at the same time draw single individuals that were open to truth to ask Him further about His identity.