On the other hand, it must be pointed out here that he at least allows the supreme secular power such authority as to deprecate any armed resistance to it, even where the Evangel is oppressed. In his work “On the secular power” we find him stating: “I say briefly that no Prince may make war on his over-Lord, such as the King, or the Emperor, or any other feudal superior, but must allow him to seize what he pleases. For the higher authorities must not be resisted by force, but merely by bringing them to a knowledge of the truth. If they are converted, it is well; if not, you are free from blame, and suffer injustice for God’s sake.”[915]--As early as 1520 we find him saying: “Even though the authorities act unjustly God wills that they should be obeyed without deceit, unless, indeed, they insist publicly on the doing of what is wrong towards God or men; for to suffer unjustly harms no man’s soul, indeed is profitable to it.”[916] At the outset he persisted in dissuading Princes favourable to his cause from armed resistance to the Emperor. His earlier unwillingness, however, only contrasts the more strangely with his later attitude, particularly after the Diet of Augsburg, when his position had become stronger and when danger appeared to threaten the new Evangel from the Imperial power, even though all the Emperor’s steps were merely in accordance with the ancient laws of the Empire. Addressing the protesting Princes, he tells them they must act as so many Constantines in defence of their cause, and not wince at bloodshed in order to protect the Evangel against the furious, soul-destroying attacks of the new Licinii. His change of front in thus inciting to rebellion he covered, by declaring he was most ready to render to Cæsar the things that were Cæsar’s, but that when the Emperor forbade “what God in His Word [according to Luther’s interpretation] had taught and commanded,” then he was going beyond his province; in such a case it was well to remember that “God still retained what was His,” “and that they, the tyrants, had lost everything and suffered shipwreck.”[917] In this case the action taken by the temporal power according to law must, he says, be forcibly frustrated by the subject. New theories as to the rights of the Emperor and the Princes did their part in justifying these demands in his eyes. “Gradually,” says Fr. von Bezold, “his experience of the limitations of the Imperial power and the liberty of the Princes of the Empire brought about a change in him. Thus he became ... the father of the doctrine of the right of resistance.”[918]