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The High Priest and the Sanhedrin accept Jesus as the Jewish Messiah c. 30AD. He is not crucified when he was and instead becomes the leader of the Jews of Roman Judea.
There are two ATLs. One is that the Romans still kill him and persecute the Jews (similar to Simon Bar Kochba) but there isn't the same split between Jesus's followers and those who reject him, as the overwhelming majority of Jews accept him.
The other is that Jesus travels away from Judea and gains non-Jewish followers. Perhaps he dies in Rome c. 50 AD with many Romans supporting him. Enormous differences from OTL are possible. One is that there are no later Roman-Jewish wars, and Jesus' message becomes the majority religion of the Roman Empire by about 150AD. What would that mean for later history?