2. It was for this cause, that the Son of God became man, and conversed with men upon earth, that he might give us a visible example of an innocent, perfect, and divine life; and that we might follow him as a light that shineth in darkness, to lead us in the way in which we should go. Hence he calls himself “the light of the world;” and promises that “he who followeth him shall not walk in darkness, but shall have the light of life.” John 8:12. 3. Hence it clearly appears, that they who refuse to follow Christ in his life, and to tread by faith in his steps, remain in darkness, and are not in the way to obtain “the light of life.” But what is this _darkness_? It is an impenitent and depraved life, called by the apostle “works of darkness,” which are to be cast off, that so we may put on “the armor of light” (Rom. 13:12); and in genuine repentance both these duties are comprised. 4. It has been abundantly proved above, that godly sorrow and true faith thoroughly change a man; that they crucify the flesh, effect an entire transformation in the soul, and beget, through the Holy Ghost, a new life. Lest, however, this should be a mere theoretical knowledge, devoid of life and practice, God has been pleased to set before us his own Son, not only as a ransom and a Mediator, but also as a _mirror_ of perfect godliness, and as a most finished pattern of the new man, who is regenerated after the image of God. In him, the fleshly Adam, the corrupt nature, never reigned; but the blessed God alone. Him it hath pleased God to set forth before our eyes, that, contemplating him and his righteous life, we might be daily more and more renewed after his image. Let us explain this point more fully. 5. Sad experience teaches us continually, that our whole nature, body and soul, is polluted with every kind of sin, vice, and corruption. These are the works of the devil appearing in the carnal man; and it is principally in the depraved and perverted _will_, that these diabolical operations are most visibly discerned. For the depraved will is the root of all sin: if that were removed, there would be sin no more. With regard to the power and natural bias of this will, it consists chiefly in turning man away from God and from _His_ will. Now, whatever departs from that Being who is the sovereign and supreme Good, cannot but be in itself evil; for it partakes of the nature of the supreme evil, and is a violation of the original constitution of our nature, as derived from God himself. It was this _turning away_ from God that produced the fall both of Satan and of man; whence sin entered into the world, and has, by fleshly generation, passed upon all men.