It is to be borne in mind, however, that certain beings who fell away from that one beginning of which we have spoken, have given themselves to such wickedness and malice as to be deemed altogether undeserving of that training and instruction by which the human race while in the flesh are trained and instructed with the assistance of the heavenly powers: they continue, on the contrary, in a state of enmity and opposition to those who are receiving this instruction and teaching. And hence it is that the whole life of mortals is full of certain struggles and trials, caused by the opposition and enmity against us of those who fell from a better condition without at all looking back, and who are called the devil and his angels, and other orders of evil, which the Apostle classed among the opposing powers. But whether any of these orders, who act under the government of the devil and obey his wicked commands, will be able in a future world to be converted to righteousness because of their possessing the faculty of freedom of will, or whether persistent and inveterate wickedness may be changed by habit into a kind of nature, you, reader, may decide; yet so that neither in those things which are seen and temporal nor in those which are unseen and eternal one portion is to differ wholly from the final unity and fitness of things. But in the meantime, both in those temporal worlds which are seen, and in those eternal worlds which are invisible, all those beings are arranged according to a regular plan, in the order and degree of merit; so that some of them in the first, others in the second, some even in the last times, after having undergone heavier and severer punishments, endured for a lengthened period and for many ages, so to speak, improved by this stern method of training, and restored at first by the instruction of angels and subsequently advanced by powers of a higher grade, and thus advancing through each stage to a better condition, reach even to that which is invisible and eternal, having travelled by a kind of training through every single office of the heavenly powers. From which, I think, this will follow as an inference—that every rational nature can, in passing from one order to another, go through each to all, and advance from all to each, while made the subject of various degrees of proficiency and failure, according to its own actions and endeavors, put forth in the enjoyment of its power of freedom of will. (_k_) Origen, _De Principiis_, IV, 9-15. (MSG, 11:360, 363, 373.) Allegorism.