For the infallibility of his judgment concerning manners, he bringeth one text, which is that of John 16:13: “When the Spirit of truth is come, he will lead you into all truth”: where, saith he, by “all truth,” is meant, at least “all truth necessary to salvation.” But with this mitigation, he attributeth no more infallibility to the Pope, than to any man that professeth Christianity and is not to be damned. For if any man err in any point, wherein not to err is necessary to salvation, it is impossible he should be saved; for that only is necessary to salvation, without which to be saved is impossible. What points these are, I shall declare out of the Scripture in the chapter following. In this place I say no more, but that though it were granted, the Pope could not possibly teach any error at all, yet doth not this entitle him to any jurisdiction in the dominions of another prince; unless we shall also say, a man is obliged in conscience to set on work upon all occasions the best workman, even then also when he hath formerly promised his work to another.