 In the mid-8th-century, taking advantage of the warring Islamic factions in Palestine, a false messiah named Abu Isa Obadiah of Isfahan inspired and organised a group of 10,000 armed Jews who hoped to restore the Holy Land to the Jewish nation.Soon after, when Al-Mansur came to power, Abu Isa joined forces with a Persian chieftain who was also conducting a rebellion against the caliph.The rebellion was subdued by the caliph and Abu Isa fell in battle in 755.