That list was nailed to the Cross and buried with Jesus once and for all. Now, ever since the time of the Holy Spirit's first infilling at Pentecost, when anyone wholeheartedly speaks out their faith in the resurrection of Jesus, he or she is made forever righteous and holy in their spirit by the Holy Spirit. That is what the new birth is. God made a covenant with Jesus, the One Who is eternally Faithful and True, and we are now eternally in Him. We have been given new hearts that desire to live in God's ways and instinctively know what they are.
Sin is no longer an issue .
The answer is simple. Everyone who has truly been born of God desires to live in His ways. Only someone who never knew Him would see His forgiveness as license to sin. We long to please our Father, because love for Him is shed abroad in our hearts by the Holy Spirit. John' is most likely the Apostle John at about age 75-80.