The function of Chiliasm in this crowd movement is plain from its history as previously sketched. It was a Christian shibboleth peculiarly valuable for securing group cohesion, and for arousing individual staying power in times of persecution. Of the numerous characteristics of successful 'sect shibboleths' three are perhaps especially note worthy: (a) Satisfaction of the demand for mystical experience. (b) Operation as an isolating device. (c) Revolt against the prevailing moral order. In the period of greatest need Chiliasm fulfilled these requirements very well. Many a Christian of little education was lifted out of himself to endure martyrdom by somewhat crass imaginations of participation in the reign of the saints in the rebuilt Jerusalem. Many a little band of sectaries maintained their group solidarity because of the belief that they were the elect people 'chosen of God' for future glory in the millennial kingdom. Many a faithful one who would otherwise have given up in despair, must have gained strength and courage from the thought of that happy era, soon to come, when the cruel persecutors of the church would be slaves suffered to live only that their servitude might augment the dignity and honor of the saints in the beatific kingdom. The relation of the Chiliastic expectation to that strange insensibility to pain which was so remarkable a characteristic of the early martyrs cannot be stated with exactness. It was probably close--at least in numerous cases. We have what seems to be entirely trustworthy evidence that not only strong men but even delicate and sensitive women exhibited the power of inhibiting the normal reactions to the most excruciating torments. This almost incredible power of inhibition can only be explained as the result of the building up of a pathologically intense, ecstatic, mental state. This ecstatic mental state would appear to have been acquired by a series of psychic changes and organic, neuronic adjustments requiring, ordinarily, a fairly considerable amount of time. This peculiar psychological condition had not merely to be built up. It must have attained an extraordinary degree of habituation in order to render its subjects impervious to such extreme sensory excitations. The requisite degree of imperviousness can hardly have been acquired without such permeation of consciousness by imagination as constituted a complete subjective universe. Many of the martyrs would seem to have lived, more or less habitually, in a mental world of their own which shut them off from susceptibility to external stimuli. This condition is frequently found in artists and thinkers, and with the accompanying insensibility to pain, is a common phenomenon in the 'trance' state as well as in some forms of insanity.[25]