Object. But you will say, doth not the scripture say, that it is the Spirit of Christ that doth make manifest or convince of sin? (John 16:8).
Ans. Yes, it doth so. But for the better understanding of this place, I shall lay down this; namely, That there are two things spoken of in the scriptures, which do manifest sin, or convince of sin. First, The law, as saith the Apostle (Rom 3:20). 'Therefore by the deeds of the law there shall no flesh be justified in his sight: [viz., God's sight:] for by the law is the knowledge of sin.' Secondly, The Spirit of Christ doth make manifest, or reprove of sin, as it is written (John 16:8,9). 'And when he [the Spirit] is come, he will reprove the world of sin, and of righteousness, and of judgment: Of sin, because they believe not on me'; saith the Son of Mary, which is Christ.
Now the law doth sometimes by its own power manifest sin without the Spirit of Christ; as in the case of Judas, who was convinced of the sin of murder, which made him cry out, 'I have sinned'; yet at that time he was so far from having the Spirit of Christ in him, that he was most violently possessed of the devil (Luke 22:3,4).
Again, Sometimes the Spirit of Christ takes the law, and doth effectually convince of sin, of righteousness, and judgment to come.
Query. But you will say, How should I know whether I am convinced by the law alone, or that the law is set home effectually by the Spirit of the Lord Jesus upon my conscience?
Ans. 1. Unto this I answer. First, When the law doth convince by its own power, without the help of the Spirit of Christ, it doth only convince of sins against the law, as of swearing, lying, stealing, murdering, adultery, covetousness, and the like. I say, it doth only make manifest sins against the law, pronouncing a horrible curse, against thee, if thou fulfil it not, and so leaves thee; but it gives thee no strength to fulfil it completely, and continually, (which thou must do, if thou wilt be saved thereby). Now thy own strength being insufficient for these things, having lost it in Adam, thou art a breaker of the law. Here the law finds thee in thy sins, and condemns thee for thy sins: But gives thee no power to come wholly out of them; neither doth it shew thee thy right Saviour, to save thee from them (which is the Son of the Virgin Mary, the man Christ Jesus) but commands thee upon pain of eternal damnation, to continue in all things that are written in the book of the law to do them (Gal 3:10). And therefore if thou hast been convinced of no other sins, but what are against the law, for all thy convictions and horror of conscience, thou mayest be but a natural man, at the best, and so under the curse.
(Obj.) But, perhaps thou wilt say, I am not only convinced of my sins against the law, but I have also some power against my sins, so that I do in some considerable measure abstain from those things that are forbidden in the law.
(Ans.) This thou mayest have, and do, as thou thinkest, perfectly, as those blind Pharisees called quakers, do think that they also do, and yet be but a natural man: And therefore I pray consider that place, in Romans 2:14, 15, the Apostle there speaks on this wise, concerning the Gentiles' obedience to the law, 'For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves: Which shew the work of the law written in their hearts.' Which work of the law, Christ as he is God, hath enlightened every one withal, that cometh into the world (John 1:9), which, as the quakers say, doth convince of sin, yet of no other than sins against the law: and therefore must needs be all one light or law; for 'the law is light' (Prov 6:23) and gives 'the knowledge of sin' (Rom 3:20). And therefore, as I said before, so say I now again, if thy convictions are no other than for the sins against the law, though thy obedience be the strictest that ever was wrought by any man, (except the Lord Jesus the Son of Mary) thou art at the best but under the law, and so consequently under the curse, and under the wrath of God, whether thou believest it or not (Gal 3:10; John 3:36).
Ans. 2. But now the second thing, how thou shouldest know, whether the Spirit of Christ doth effectually set home the law upon thy conscience, or not; and therefore to speak directly to it, if the Spirit of the Lord Jesus, the Son of God, doth set home the law effectually; then the same Spirit of Christ shews thee more sin than the sins against the law. For,
(1.) It shews thee, that 'all our righteousnesses are as filthy rags' (Isa 64:6). Thou seest all thy praying, meditation, hearing, reading, alms-deeds, fasting, reformation, and whatsoever else thou hast done, doest, or canst do, being an unbeliever, deserves at the hands of God his curse and condemnation, and that for ever: And therefore thou art so far from trusting to it, that in some measure thou even loathest it, and art ashamed of it, as being a thing abominable, both in God's sight and thine own (Phil 3:8). Thou countest thy own performances, when at best, and thine own righteousness, A bed too short to stretch thyself upon, and a covering too narrow to wrap thyself in (Isa 28:20). And these things thou seest not[2] overly, or slightly, and as at a great distance, but really and seriously, and the sense of them sticks close unto thee.