Broadly speaking, it is solved in practice in terms of the fortunes of priests and worshippers. At all stages of religious evolution extreme ill-fortune tends to detach men from the cults that have failed to bring them succour. Be it in the case of African indigenes slaying their unsuccessful rain-doctor, Anglo-Saxon priests welcoming Christianity as a surer source of income than their old worship, pagans turning Christian at the fall of Julian, or Christians going over to Islam at the sight of its triumph--the simple primary motive of self-interest is always potent on this as on other sides; and at all stages of Jewish history, it is evident, there were many who held by Yahweh because they thought he prospered them, or renounced him because he did not. And the very vicissitude of things would breed a general skepticism. [372] In Zephaniah (i, 12) there is a specific allusion to those "that say in their heart, The Lord will not do good, neither will he do evil." Judaism is thus historically a series of socio-political selections rather than a sequence of hereditary transmission. The first definite and exclusive Yahwistic cult was an outcome of special political conditions; and its priests would adhere to it in adversity insofar as they had no other economic resort. Every return of sunshine, on the other hand, would minister to faith; and while many Jews in the time of Assyro-Babylonian ascendancy decided that Yahweh could not save, those Yahwists who in the actual Captivity prospered commercially in the new life would see in such prosperity a fresh proof of Yahweh's support, [373] and would magnify his name and endow his priests accordingly. For similar reasons, the most intense development of Judaism occurs after the Maccabean revolt, when the military triumph of the racial remnant over its oppressors inspired a new and enduring enthusiasm. On the other hand, foreign influences would chronically tend to promote doubt, especially where the foreigner was not a mere successful votary exalting his own God, but a sympathetic thinker questioning all the Godisms alike. This consideration is a reason the more for surmising a partly foreign source for the book of Job, where, as in the passage cited from Zephaniah, there is no thought of one deity being less potent than another, but rather an impeachment of divine rule in terms of a conceptual monotheism. In any case, the book stands for more than Jewish reverie; and where it is finally turned to an irrelevant and commonplace reaffirmation of the goodness of deity, a certain number of sincerer thinkers in all likelihood fell back on an "agnostic" solution of the eternal problem.