Sanctification is a process – the process of becoming more like Christ, of growing in holiness. This process begins the instant you are converted and will not end until you meet Jesus face-to-face. Sanctification is about our own choices and behavior. It involves work. Empowered by God’s Spirit, we strive. We fight sin. We study Scripture and pray, even when we don’t feel like it. We flee temptation. We press on; we run hard in the pursuit of holiness. And as we become more and more sanctified, the power of the gospel conforms us more and more closely, with ever-increasing clarity, to the image of Jesus Christ.
C.J. Mahaney