What do you think we can tease out about his life?
OK, a quite likely scenario….
Born in Galilee some time before year 0, Jewish, raised in Nazareth, which was just a small cluster of huts, really.
Folks had no land, not the eldest son, left home and became some sort of follower of John the Baptist in Judah to the south, where he either adopted or had reinforced an apocalyptic vision of the world, based heavily on the Daniel writings and Enoch literature, in which God was soon to send his angel army, led by the Son of Man, to strike down the powerful who had allied with the forces of Satan, and give to the righteous remnant new bodies made of heavenly stuff and they would live in an Edenic Jerusalem, to which all other nations bowed down.
(Keep in mind, these conclusions are not based solely on examination of the Biblical texts.)
At this time, Judah, Samaria, and the Galilee were under Roman control, typical setup with a good deal of local autonomy as long as the peace was kept and tribute paid.
Problem was, the High Priest was not an eligible Jew, and for many Jews -- such as the Essenes at Qumran, whose settlement was likely established by ousted Zadokite priests and who railed against the Temple -- that meant the Temple was corrupt, which risked God's wrath.
When Herod had John the Baptist beheaded, it must have been a terrible blow to Jesus, who would have viewed John as a prophet of God, and likely had no great love for Herod in the first place.
If Jesus wasn't fully radicalized before, he was now. He must have been quite a charismatic person, because he began to gather his own disciples (students) around him back in Galilee.
He taught in the rabbinic style of the day, using certain well established patterns of lay teaching, heavy on metaphor and analogy and references to agriculture. (This is prior to the later formal Rabbinic style.)
He was illiterate, but was familiar with the oral tradition which is eventually preserved in the targumim, or Aramaic paraphrases of and commentary upon the Hebrew Bible.
His central message was that the Day of the Lord was imminent, when the Son of Man prophesied by Daniel would lead the Heavenly Host to purge the wicked from power and would put the righteous remnant in palaces in the new eternal Jerusalem.
He was an analog to the end time preachers of our day. And like them, he was not alone by any means.
Not all his followers were peasants, however, which indicates that this guy, whoever he was, must have been really something to see. No doubt he was a very strong preacher.
Just some context, in that day, the synagogues were something like town hall meetings, but ones at which issues were decided by local theologues who would cite Torah and rabbinical sources to support their views. Jesus certainly would have spoken at some synagogues, but it's nothing like the later descriptions we get of Jesus reading from scrolls.
At some point, he's in Jerusalem for the Passover festival -- at which time Pilate comes in from the coast with his troops to make sure no radicals start stirring up trouble -- and starts preaching this stuff about how the Temple is corrupt and God's about to come down and kill everyone in power and only his followers will be spared and they'll be the blessed of God in the new Jerusalem.
It's not unlikely that he got into an altercation with merchants in the Temple compound colonnade.
This is reported to Pilate, who has Jewish police accompany Roman soldiers who go to where Jesus is staying and arrest him. By the following morning, he's been crucified as an example to other potential rabble-rousers.
His body is disposed of by the Romans, probably into a common pit, and his followers are unable to locate it. This particular fact becomes the basis for later claims with which we are all familiar.
His followers, unable to accept what had happened, invented a new theology, based on innovative interpretations of scripture, in which Jesus -- who was supposed to be the one at the head of the new community in the eternal Jerusalem -- was intended to be sacrificed… although even from the outset there was disagreement as to why, and what it meant.
To other Jews, however… the best analogy is probably to David Koresh. Even now, there are some of his surviving followers who believe he was the second coming of Jesus. To Jews of that day, saying that this executed criminal was the Messiah (who was anything BUT that) was simply crazy.
Then it gets interesting.
ETA: Jesus did preach peace and love and forgiveness, but this was in order to demonstrate that you were among the chosen, the righteous remnant. Jesus's followers would have expected the Day of the Lord in their lifetimes.