In principle, it will be observed, the letter left open a loophole in the event of a more favourable condition of the Protestant cause supervening, i.e. should it be possible to arrive at the desired result by some quieter and safer means, and without deposing the Emperor. None the less noteworthy are, however, the biblical utterances to which Luther again returns: “A Christian ought to be ready to suffer violence and injustice, more particularly from his own ruler,” otherwise “there would be no authority or obedience left in the world.” He would fain uphold, against all law, “whether secular or Popish,” the truth, that “authority is of Divine institution.” Hence the Princes must quietly submit to all the Emperor does; “Each one must answer for himself and maintain his belief at the risk of life and limb, and not drag the Princes with him into danger.” “The matter must be committed to God.” Hence the memorandum culminates in the exhortation to sacrifice “life and limb,” i.e. to endure martyrdom.[135] This memorandum of Luther’s was kept secret. At any rate the apparently heroic renunciation of all recourse to arms, together with the reference—reminiscent of his earlier mysticism—to the Christian’s vocation to suffer violence and injustice, make of this memorandum a remarkable document not to be matched by any other writing of Luther at that time. Though there is little doubt that the sight of the comparatively helpless and critical position of the new party had its effect here, yet, beyond this, there is a psychological connection between the standpoint voiced in the memorandum and Luther’s attitude after the inward change which occurred in him whilst yet a monk. His perfectly just injunction not to withstand the Emperor, he rests partly on the mystic theories he had imbibed at that time, partly on his early erroneous views concerning the rights of the authorities as guardians of outward, public order. In his enthusiasm for his cause he clings to that presumptuous confidence in a special Divine guidance, which had inspired him from the beginning of his career. “The call of a singular spirit and faith,” which he considered necessary in the case of the Elector Frederick (see above, p. 48), he hears quite clearly within himself, though as yet this call does not urge him to advocate armed resistance to the Emperor, but merely inspires him blindly to confide in his cause and to exhort others to “martyrdom.” Simultaneously Melanchthon sent to the Elector a memorandum of his own, which, apart from being clearer in language and thought, closely resembles Luther’s and betrays the same deficiencies.[136] _The Change of 1530; Influence of the Courts._ In that same year, 1530, after his return to Wittenberg from the Coburg on the termination of the Diet of Augsburg, a notable change took place in Luther’s public attitude towards the question of the employment of force. This change we can follow step by step.