2. Thus, too, St. Paul vigorously defended the doctrine of justification by faith (Rom. 3:20, etc.), of good works (2 Cor. 9:8, etc.), of the resurrection of the dead (1 Cor. 15:1, etc.), of Christian liberty (1 Cor. 9; 10—Gal. 5:1, etc.), etc., against certain false apostles who had intruded into the Church. We have, further, the example of the holy bishops and fathers of the primitive church, who, following the example set them by the apostles, strenuously opposed in their public controversial writings, the Pagan superstitions, and the heresies of those times. Nay, for the same purpose General Councils were gathered by the Christian emperors, who condemned the chief heretics that infested the church at that time; such as the Arians, Macedonians, Nestorians, and Eutychians; not to mention the example of Martin Luther, by whose polemical books and writings, the papacy, and other sects, have in these latter days been successfully assailed. 3. It remains, therefore, that preaching, writing, and disputation against heretics, must be continued, to the preserving of the purity of doctrine, and of true religion. For this reason, the apostle will also have “a bishop to be able both to exhort and convince the gainsayers.” Titus 1:9. Though this in itself is both lawful and commendable, yet it has so fallen out by the abuse of it, that disputations and controversies are increased to such an extent in these days, that the Christian life, true repentance, love, and godliness, are, as it were forgotten; as if the sum and substance of the Christian religion consisted in arguing, and writing books of controversy, rather than in that unfeigned holiness of life, and purity of manners, which the Gospel requires.