Calvin, who saw that the Devil's chief device was disunity and division and who preached that there should be friendly fellowship for all ministers of Christ, made a similar point in a letter to a trusted colleague:

"Among Christians there ought to be so great a dislike of schism, as that they may always avoid it so fast as lies in their power. That there ought to prevail among them such a reverence for the ministry of the word and the sacraments that wherever they perceive these things to be, there they must consider the church to exist...nor need it be of any hindrance that some points of doctrine are not quite so pure, seeing that there is scarcely any church which has not retained some remnants of former ignorance."