19. _Persian Period._[36]--The course of events from the middle of the 6th century B.C. to the close of the Persian period is lamentably obscure, although much indirect evidence indicates that this age holds the key to the growth of written biblical history. It was an age of literary activity which manifested itself, not in contemporary historical records--only a few of which have survived--but rather in the special treatment of previously existing sources. The problems are of unusual intricacy and additional light is needed from external evidence. It will be convenient to turn to this first. Scarcely 40 years after the destruction of Jerusalem, a new power appeared in the east in the person of Cyrus the Great. Babylon speedily fell (539 B.C.) and a fresh era opened. To the petty states this meant only a change of masters; they now became part of one of the largest empires of antiquity. The prophets who had marked in the past the advent of Assyrians and Chaldeans now fixed their eyes upon the advance of Cyrus, confident that the fall of Babylon would bring the restoration of their fortunes. Cyrus was hailed as the divinely appointed saviour, the anointed one of Yahweh. The poetic imagery in which the prophets clothed the doom of Babylon, like the romantic account of Herodotus (i. 191), falls short of the simple contemporary account of Cyrus himself. He did not fulfil the detailed predictions, and the events did not reach the ideals of Hebrew writers; but these anticipations may have influenced the form which the Jewish traditions subsequently took. Nevertheless, if Cyrus was not originally a Persian and was not a worshipper of Yahweh (Isa. xli. 25), he was at least tolerant towards subject races and their religions, and the persistent traditions unmistakably point to the honour in which his memory was held. Throughout the Persian supremacy Palestine was necessarily influenced by the course of events in Phoenicia and Egypt (with which intercourse was continual), and some light may thus be indirectly thrown on its otherwise obscure political history. Thus, when Cambyses, the son of Cyrus, made his great expedition against Egypt, with the fleets of Phoenicia and Cyprus and with the camels of the Arabians, it is highly probable that Palestine itself was concerned. Also, the revolt which broke out in the Persian provinces at this juncture may have extended to Palestine; although the usurper Darius encountered his most serious opposition in the north and north-east of his empire. An outburst of Jewish religious feeling is dated in the second year of Darius (520), but whether Judah was making a bold bid for independence or had received special favour for abstaining from the above revolts, external evidence alone can decide. Towards the close of the reign of Darius there was a fresh revolt in Egypt; it was quelled by Xerxes (485-465), who did not imitate the religious tolerance of his predecessors. Artaxerxes I. Longimanus (465-425), attracts