Who teach: That true believers and regenerate can sin the sin unto death or against the Holy Spirit.
Since the same apostle John, after having spoken in the fifth chapter of his first epistle, vs. 16 and 17, of those who sin unto death and having forbidden to pray for them, immediately adds to this in vs. 18: We know that whosoever is begotten of God sinneth not (meaning a sin of that character), but he that was begotten of God keepeth himself, and the evil one toucheth him not (1 John 5:18).
Who teach: That without a special revelation we can have no certainty of future perseverance in this life.
For by this doctrine the sure comfort of the true believers is taken away in this life, and the doubts of the papist are again introduced into the Church, while the Holy Scriptures constantly deduce this assurance, not from a special and extraordinary revelation, but from the marks proper to the children of God and from the very constant promises of God. So especially the apostle Paul: No creature shall be able to separate us from the love of God, which is in Christ Jesus our Lord (Rom. 8:39). And John declares: And he that keepeth his commandments abideth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he gave us (1 John 3:24).
Who teach: That the doctrine of the certainty of perseverance and of salvation from its own character and nature is a cause of indolence and is injurious to godliness, good morals, prayers, and other holy exercises, but that on the contrary it is praiseworthy to doubt.
For these show that they do not know the power of divine grace and the working of the indwelling Holy Spirit. And they contradict the apostle John, who teaches the opposite with express words in his first epistle: Beloved, now are we children of God, and it is not yet made manifest what we shall be. We know that, if he shall be manifested, we shall be like him; for we shall see him even as he is. And every one that hath this hope set on him purifieth himself, even as he is pure (1 John 3:2, 3). Furthermore, these are contradicted by the example of the saints, both of the Old and the New Testament, who though they were assured of their perseverance and salvation, were nevertheless constant in prayers and other exercises of godliness.