פירוש על עבודה זרה 54:8

The Talmud rejects the analogy between non-Jews and heretics. Jews may not be healed by non-Jews because they are violent. But if the Jew is dying, then why not be healed? Worst case scenario he dies a little earlier. But when it comes to heretics, the fear is that Jews will be drawn into their heresy. Therefore, Jews should have nothing to do with heretics. Note that this text, which appears in slightly different versions elsewhere in rabbinic literature, offers an interesting statement on the draw that Christianity had over Jews. The rabbis had to offer strict warnings to keep people away from Christianity. It is not that Jews wanted to become full Christians. Rather, we can see that they are attracted to some aspects of Christianity—here the healing powers of the Christians.