 None of them had an authoritative character analogous to that given by Christianity to its three great formulas (the Apostles' Creed, the Nicene or Constantinopolitan, and the Athanasian), or to the Kalimat As-Shahadat of the Muslims.None of the many summaries from the pens of Jewish philosophers and rabbis has been invested with similar importance.Unlike many other religions, Judaism has not made strong attempts to convert non-Jews, although formal conversion to Judaism is permitted.