Persian influence introduced messianism to the Hebrew Bible

Evidence

Messianism too seems to have Persian antecedents, in the doctrine that at the end of time a figure will arise from the sacred seed of Zoroaster, who will estab­ lish all that is good on earth. It is not without significance that the Messianic idea does not appear in the Hebrew Bible until after the return from Babylon, that is to say after the time when the Jews came under Persian influence. — Bernard Lewis, From Babel to Dragomans, 301