It is by grace that we are being saved as surely as by grace we have been saved. If we are not keenly sensitive to our own helplessness, then we can make the use of the means of sanctification the minister of self-righteousness and pride and thus defeat the end of sanctification. We must rely not upon the means of sanctification but upon the God of all grace. Self-confident moralism promotes pride, and sanctification promotes humility and contrition.
God works in us and we also work. But the relation is that because God works we work. All working out of salvation on our part is the effect of God's working in us, not the willing to the exclusion of the doing and not the doing to the exclusion of the willing, but both the willing and the doing. And this working of God is directed to the end of enabling us to will and to do that which is well pleasing to him.
Sanctification involves the concentration of thought, of interest, of heart, mind, will, and purpose upon the prize of the high calling of God in Christ Jesus and the engagement of our whole being with those means which God has instituted for the attainment of that destination. Sanctification is the sanctification of persons renewed after the image of God in knowledge, righteousness, and holiness. The prospect it offers is to know even as we are known and to be holy as God is holy. Every one who has this hope in God purifies himself even as he is pure (1 John 3:3).