 However once Heraclius reached Jerusalem he was persuaded to go back on his promise to Benjamin of Tiberias.According to Eutychius (887-940), the Christians population and monks of Jerusalem convinced the Emperor to break his word.Some modern scholars ascribe the story of the “Oath of Heraclius” to the realm of legend doubting that Heraclius ever made such a promise, instead ascribing this as a product of later apologists.