This again...
Everyone who "isn't Christian, but believes in Jesus as the messiah" claim he was a pretty standard Jew, preaching Jewish teachings... If that's the case, what's so special about him? What makes him any different from the other, very numerous, preachers of that time?
In short, Himself.
In his book, 'A Rabbi Talks with Jesus', Jacob Neusner places himself among Jesus' listeners. In his interior dialogue Neusner has just spent the whole day following Jesus, and now he retires for prayer and Torah study with the Jews of a certain town, in order to discuss with the local rabbi all that he has heard. The rabbi cites from the Babylonian Talmud, "Six hundred and thirteen commandments were given to Moses, three hundred and sixty five negative ones, corresponding to the number of the days of the solar year, and two hundred forty eight positive commandments, corresponding to the parts of man's body.
"David came and reduced them to eleven
Isaiah came and reduced them to six
Habakkuk further came and based them on one, as it is said; "But the righteous shall live by his faith."
Continuing the dialogue, "So, the master says, 'is this what the sage, Jesus had to say?
"I; Not exactly, but close.'
"He; 'What did he leave out?'
"I; Nothing.'
"He; 'Then what did he add?'
"I; Himself' "
Neusner cites Jesus' words to the rich young man to clarify his point. "If you would be perfect, go, sell all you have and follow me". Perfection, the state of being holy as God is holy, as demanded by the Torah, now consists in following Jesus. The torah of the Messiah.
Jesus is lord of the Sabbath, and his community of disciples , the new Israel.