Why is a saved person's lifestyle and thinking changed?
A saved person’s lifestyle and thinking change because the Holy Spirit now controls and guides him instead of the world, the flesh, and the devil. The Spirit becomes his guideline for living, and God’s love imparted through the Spirit’s power produces obedience that fulfills the law.
Les explains that one of the first marks of true salvation is a change in lifestyle, appetites, and the whole thought process. Whereas the believer was once under the control of the world, the flesh, and the devil, he is now under the control of the Spirit of God. The Spirit becomes his guideline for living, so he walks not after the flesh or old Adam but after the Spirit. God’s love is imparted through the power of the Holy Spirit working in his life, enabling him to fulfill the law—not by human effort, but because God-given love is the fulfilling of the law.