Over the next few weeks, I will post a summary/interaction/”rewriting” of John Owen’s “On the Mortification of Sin”. Sanctification is a difficult topic and often misunderstood, and I waiver in my understanding and expectation. So, I hope that Mr Owen will shed some light on the issue.
To get underway it is important to ask, what is sanctification? It is the Christian doctrine that states that after a person is “made new”, “born again”, or regenerated by the Spirit of God, they will in fact become more like Jesus on a daily basis in their practical living. God says, “Be holy, as I am holy” and “be perfect, as I am perfect”, and sanctification is the daily growth into that holiness or perfection. The end of redemption is the restoration of the image of God in man, so sanctification is the daily practical outworking of that image, which in principle is in the believer at the time of their conversion. The Westminster Confession says, “They who are effectually called and regenerated, having a new heart and a new spirit created in them, are further sanctified, really and personally, through the virtue of Christ’s death and resurrection, by his Word and Spirit dwelling in them; the dominion of the whole body of sin is destroyed, and the several lusts thereof are more and more weakened and mortified, and they more and more quickened and strengthened, in all saving graces, to the practice of true holiness, without which no man shall see the Lord.” Or, as the Larger Catechism says, “Question 75: What is sanctification?
Answer: Sanctification is a work of God’s grace, whereby they whom God has, before the foundation of the world, chosen to be holy, are in time, through the powerful operation of his Spirit applying the death and resurrection of Christ unto them, renewed in their whole man after the image of God; having the seeds of repentance unto life, and all other saving graces, put into their hearts, and those graces so stirred up, increased, and strengthened, as that they more and more die unto sin, and rise unto newness of life.”
The key here is the idea of “mortification”, which is the putting to death the flesh or the “old man”, which wars against the Spirit. That is enough by way of introduction and going forward, I will work with John Owen’s “On the Mortification of Sin” as a guide.


