What does it mean for a believer to walk after the Spirit rather than after the flesh?
Walking after the Spirit means the Spirit becomes the believer's guideline for living, rather than old Adam or the flesh controlling them. It marks true salvation by a changed lifestyle, appetites, and thought process, because the believer is now under the control of the Spirit of God instead of the world, flesh, and devil.
Les teaches that believers walk not after the flesh or old Adam, but after the Spirit, and the Spirit becomes their guideline for living. This connects to Romans chapter eight, where the righteousness and completeness of the law are fulfilled in those who walk not after the flesh. Les also goes to Romans chapter thirteen, verses eight and ten, showing that love is the fulfilling of the law. That does not happen by human effort; it happens when the love of God is imparted through the power of the Holy Spirit working in a believer's life. One of the first marks of true salvation, Les explains, is a change in lifestyle, a change in appetites, and a change in the whole thought process. Whereas believers were once under the control of the world, the flesh, and the devil, now they are under the control of the Spirit of God.