The Rabbis I know and have known recognize that there was a Jew named Yeshua. However, the way he is depicted in the Bible is inaccurate. He was a normal Jew with family and at least one brother. And he had a thing with Mary Magdalene.
He was not 'without sin' and was prone to fits of anger. Overturning the tables at the temple was one such outburst.
His original intent was to adhere to Judaism as it is written in the Torah without the interpretation of the Rabbis. Essentially, he was the first Rabbi of Reform Judaism.
This is only one interpretation, one opinion among many. So, don't get upset about it. By the way, if Jesus was actually born on December 25, then New Years Day would be the day of his 'brit milah'. January 1 would be the day that he formally joined the Covenant of Abraham as a Jew.
If the Brit Hadasha is correct, and I do believe it is, he was indeed a rabbi, itinerant, and without a master... I disagree that he was a proponent of Reformed Judaism, or any of the various sects - And in fact, challenged the Pharisees on every point - Many of his miracles were directly challenging the Pharisees and Sadducees.
His doctrine was Torah - And only Torah - Defying the Wisdom of the Elders... Pointing out that they were willing to break Torah to preserve their traditions.
Christian tradition supposes his birth on Dec 25th, but careful reading would likely put his birth upon Sukkot, with his brit upon the Great Eighth Day (rejoicing in his entering into the covenant) - Some would argue he was born upon Yom Teruah, but Sukkot is a better match in prophecy and the description of his birth (No room at the inn, laid him in a sukkot, tabernacled among us, temporary dwelling in a human form)... No doubt, if he is who he claims, his birth, like his death, would be heralded by the prophetic nature of the Holy Days of YHWH.
So I sing my carols at harvest time. :)
