_Prot._ I pray you consider a little better what you said last; for since Heresie as you grant it, is an obstinate defence of error only against some _necessary_ point of Faith; and all truth delivered in Scripture is not such; unless you can also distinguish, in Scripture, these points of necessary Faith from others, you can have no certain knowledge of Heresie, and the believing all that is delivered in Scripture, though it may preserve you from _incurring_ Heresie, yet cannot direct you at all for _knowing_ or _discerning_ Heresie, or an error against a fundamental or a necessary point of Faith, from other simple and less dangerous errors, that are not so: nor, by this can you ever know what errors are Heresies, what not; and so after all your confidence, if by your neglect you happen not to believe some Scriptures in their true sense, you can have no security in your Fundamental, or necessary Faith; or of your not incurring _Heresie_. Neither, Secondly, according to your discourse, hath the Church any means to know any one to be an _Heretick_; because she can never know the just latitude of his fundamentals. And so _Heresie_ will be a grievous sin indeed; but walking under such a vizard of non-sufficient proposal, as the Ecclesiastical Superiors cannot discover or punish it. Therefore to avoid such confusion in the Christian Faith, there hath been alwaies acknowledged in the Church some authority for declaring Heresie; and it may seem conviction enough to you, that her _most General Councils_ have defined the contrary position to what you maintain; and received it for a _fundamental_. Of which Ecclesiastical Authority for declaring Heresie, thus Dr. _Potter_, [66]----_The Catholick Church is careful to ground all her declarations in matters of Faith, upon the divine authority of Gods written word. And therefore whosoever wilfully opposeth a judgment so well grounded, is justly esteemed an Heretick; not properly because he disobeys the Church; but because he yields not to Scripture sufficiently propounded, or cleared unto him_ [i. e. by the Church.] Where the Doctor seems to grant these two things: That all that the Catholick Church declares against Heresie is grounded upon the Scripture; and that all such as oppose her judgment are Hereticks: but only he adds, that they are not Hereticks properly, or formally for this opposing the Church, but for opposing the Scriptures. Whilst therefore the _formalis ratio_ of Heresie is disputed, that all such are Hereticks seems granted. And the same Dr. elsewhere concludes thus, [67]----_The mistaker will never prove, that we oppose any Declaration of the Catholick Church_, [he means such a Church as makes Declarations, and that must be in her Councils]----_And therefore he doth unjustly charge us with Heresie._ And again, he saith, [68]----_Whatsoever opinion these ancient writers_ [S. Austin, Epiphanius and others] _conceived to be contrary to the common or approved opinion of