This revival was stamped with the impress of the intellectual influences which were working upon the Jews in Babylonia. Some of the extant writings of this period, alike in literary style, in moral tone and in religious thought, mark a new era. Israel's genius flowered in this dark night--true to the mystic character of the race. This highest effort of prophetic thought and feeling appears to have quickly exhausted itself. In reality, it followed the usual order of religious movements, and turned into a priestly organization. The group of prophets around the first Isaiah prepared the way for the priestly movement that followed a century later. The group of prophets around the second Isaiah prepared the way for the priestly movement that followed close in their steps. First comes always, in religion, an epoch of inspiration, and then comes a period of organization. The organization never bodies fully the spirit of the inspiration. The ideal is not realizable in institutions. Institutional religion is always a compromise, a mediation between the lofty conceptions and impatient aspirations of the few who inspire the new life, and the low notions and contented conventionalisms of the many whom they seek to inspire. The compromise is necessarily of the nature of a reaction; but the interplay of action and re-action is the law of ethical as of chemical forces. Israel really needed the conserving work of a great organization. The prophetic religion was far in advance of the popular level. The high thoughts and lofty ideas of the prophets needed to be wrought into a cultus, which, while not breaking abruptly with the popular religion, should imbue the conventional forms with deeper ethical and spiritual meanings; should, through them, systematically train the people in ethical habits and spiritual conceptions; and should thus gradually educate men out of these forms themselves.