To formulate any definite answers to such questions was rendered still more difficult in Luther’s case by the fact that prudence compelled him to exercise great reticence and caution in his utterances on many such points.[866] On the one hand he might easily have spoilt his whole work in the eyes of his cautious sovereign had he proclaimed openly the right of his friends among the nobles to resist the Emperor even by force. On the other, many would have been repelled had he laid down the principle of intolerance towards Zwinglians and Anabaptists as strongly at the commencement as he did later. In considering his doctrine concerning the secular authorities and the obedience due to them, we must simply take his utterances in their historical sequence, at the same time keeping a watchful eye on his actual behaviour in which we shall find at once their explanation and justification.[867] Only in this way shall we arrive at a clear estimation of his tangled ideas on secular authority and religious toleration.[868] As to his varying theories,[869] at the outset and during the first stage of his revolt against the Church, Luther was fond of launching out into very questionable and far-reaching statements concerning the secular authority, as appears, for instance, in his tract addressed in 1520 to the German Nobility. Where the authorities are on the side of the Evangel, their power is so great that they may exercise their office “unhindered,” “even against Pope, bishop, parson, monk or nun or whatever else there be”; in that case, too, the secular authorities are perfectly justified in summoning clerics to answer before their tribunal.[870] “St. Paul says to all Christians,” Luther argues, “‘Let every soul’--hence, I suppose, even the Pope himself--‘be subject to higher powers, for they bear not the sword in vain.’ ... St. Peter, too, foretold that men would arise who would despise the temporal rulers, which has indeed come to pass through the rights of the clergy.”[871] In such wise does he charge the past. But now, he continues (owing to his efforts), “the secular power has become a member of the ghostly body, and, though its office is temporal, yet it has been raised to a spiritual dignity; its work may now be done freely and unhindered among all the members of the whole body, punishing and compelling, where guilt deserves it or necessity demands, regardless of Pope, bishop or priest, let them threaten and ban as they please.”[872] It is clear how the interests of the “reformation” he has planned impel him to extend the rights of the secular power, even in the spiritual domain, over all who resist. In his work “On the secular power,” of March, 1523, we find an entirely different language.