I can only surmise, my not having met him myself...
But I believe he was a normal mortal like the rest of us, a bit of a heretic, alternative religious guru, a cult leader even, who went against the grain, had bastard children out of wedlock much like the rest of us, and due to the oppressiveness of the day, hung/nailed (whatever) for his crimes, ... being a dissident.
I bet he was very political, made posters and protested on Mt Zion.
He was probably quite bright, anti-conformist, I imagine him being a bit of a revolutionist, John Lennon type of character, only without the glasses obviously.
As for miracles?
No, being agnostic, I cant fathom this concept myself.
Truth be known, he may have had a touch of mental illness, as do most religious zealots who believe they have 'special' powers.

.... .... That or had a bit of a complex being conceived out of wedlock, which was a big deal in those days.