We don’t really know that much about Jesus so how can we know he was good. Did he spend the time from 12-29 fucking women and doing drugs? We don’t know. He could have led a Jewish underground group resistance, or he could have had an orphanage. I have no idea why the Son of God and his disciples couldn’t be bothered to tell us what he was doing. If he was the first born of creation who could argue with the Jewish Religious Leaders at 12, by 17 I bet he did some amazing things. But once again we have no idea. His biographers were either hiding something or they were incompetent and lazy.
We could take a 3.5 year snapshot of many people’s lives and be impressed, but we would not have the full story. We could tell a nice story about an Austrian artist or a young Russian seminary student and have no idea what type of people these me really were. We can speculate and talk about the few things Jesus said. He could have been the Greatest Man Who Ever Lived or he could have been a rather plain man with an embellished biography.
It is not like the apostles were above plagiarizing other people's ideas. Just look at the Apostle Paul's scripture about bad association spoils useful habits, he took that right out a play by Menander, a Greek playwright. A play that was written 300+ years before Paul came along. What other thoughts were stolen from ancient writers? These men whose work was not so fortunate to survive the fires of Alexandria or purges from the Catholic Church.