4 Bible Verses about Changed Heart

Therefore, if any one is in Christ, he is a new creation; the old has passed away, behold, the new has come.

He is a Jew who is one inwardly; and real circumcision is a matter of the heart, by the Spirit, and not by the written code. His praise is not from men but from God.

For godly sorrow produces a repentance that leads to salvation and brings no regret, but worldly sorrow produces death.

Do not be conformed to this world but be transformed by the renewing of your mind, that you may prove what is the will of God, what is good and acceptable and perfect.