User blog comment:LurkerLordB/Religion in a world without Christianity/@comment-1593341-20120424094112/@comment-1310192-20120430042426

Plus, as Luker said,without Christianity, Judaism would be far less prozelite and far smaller than OTL. Even of Hanif was a different religion, with an entirely sectarian Judaism and far less monotheism around, there would be a Hanif limited to a few Arab tribes. So a very small monotheistic faith, or it becomes like Zoroastrianism and the empire has to be mildly secular and converts entirely voluntary. In both ways, it won't spread cery far, lol.