“Therefore, if anyone is in Christ, he is a new creation.
The old has passed away; behold, the new has come.”
(2 Corinthians 5:17, ESV)
“But whoever has become a partaker of the divine character, the being of Jesus Christ and the power and character of the Holy Spirit, conforms himself to the image of Jesus Christ in all submission, obedience, and righteousness serves God,
in summary is a right-believing Christian;
that one is a new person and a new creature in Christ Jesus.”