The chief object of the severity thus recommended was, of course, efficaciously to promote the end for which Government itself was held to be instituted. The clergy had authority over the conscience, but it was thought necessary that they should be supported by the State with the absolute penalties of outlawry, in order that error might be exterminated, although it was impossible to banish sin.[228] No Government, it was maintained, could tolerate heresy without being responsible for the souls that were seduced by it;[229] and as Ezechiel destroyed the brazen serpent to prevent idolatry, the mass must be suppressed, for the mass was the worst kind of idolatry.[230] In 1530, when it was proposed to leave the matters in dispute to the decision of the future Council, Luther declared that the mass and monastic life could not be tolerated in the meantime, because it was unlawful to connive at error.[231] "It will lie heavy on your conscience," he writes to the Duke of Saxony, "if you tolerate the Catholic worship; for no secular prince can permit his subjects to be divided by the preaching of opposite doctrines. The Catholics have no right to complain, for they do not prove the truth of their doctrine from Scripture, and therefore do not conscientiously believe it."[232] He would tolerate them only if they acknowledged themselves, like the Jews, enemies of Christ and of the Emperor, and consented to exist as outcasts of society.[233] "Heretics," he said, "are not to be disputed with, but to be condemned unheard, and whilst they perish by fire, the faithful ought to pursue the evil to its source, and bathe their hands in the blood of the Catholic bishops, and of the Pope, who is a devil in disguise."[234]