^Jesus gradually realized that the Jews would not embrace him overnight, but that he was getting a hearing among non-Jews, so his preaching become more universalist. After the crucifixion, Paul completely rewrote the playbook specifically to recruit Gentiles. The Greco-Roman world was spiritually exhausted and willingly sought to adopt Judaism, but the strictures were too difficult. The loosening of these strictures in the new movement opened the door for mass adoption. Of course, this also opened the door to pagan contaminants, and the principle trajectory of history over the last two millennia has been to purge these contaminants and return to pure Judaism, albeit a Judaism that is less reliant on strictures and more reliant on spiritual commitment.