In Christ, we are made an entirely new creation, just as God created the heavens and the earth originally—He made them out of nothing, and so He does with us. He does not merely clean up our old selves; He makes an entirely new self. When we are in Christ, we “Share in His divine nature” (2 Peter 1:4). God Himself, in the person of His Holy Spirit, takes up residence in our hearts. We are in Christ and He is in us.