The attractiveness of Christianity may, however, have suffered a setback with its being explicitly outlawed in the 80s CE by Domitian as a "Jewish superstition", while Judaism retained its privileges as long as members paid the Fiscus Judaicus.
The Fiscus Judaicus (Latin: "Jewish tax") or "Temple Tax" was a tax collecting agency instituted to collect the tax imposed on Jews in the Roman Empire after the destruction of the Temple of Jerusalem in 70 CE in favor of the temple of Jupiter Capitolinus in Rome.