In 313CE, jews of the Levant were trying to rekindle a unified Hebrew presence in the region. Weary of the incessant trouble-making by Jews, and the flacid capability of Rom to respond, The Sassanid Persians conquered the area in 313 CE and waged a pogrom against the leadership of the mounting insurrection. The Persians killed Nechemya ben Natan and his advisor, Rab Shizbi, (Exilarch and his Gaon) for inciting insurrection. This cycle of "arise, Get noticed, get executed was repeated in rapid succession among Exilarchs and Their clerical advisors. In many respects it was this period of repeated in surrections, to rekindle a Bar Kachba revolt, that so debased Jews of the region that those who survived had assimilated into arabic-speaking culture as well as Persian culture paving the way for the ascenancy of Prophet Muhammad.