4 Bible Verses about Changed Heart

So that if any one is in Christ, he is a new creature: the old state of things has passed away; a new state of things has come into existence.

But the true Jew is one inwardly, and true circumcision is heart-circumcision--not literal, but spiritual; and such people receive praise not from men, but from God.

For godly sorrow produces repentance leading to salvation, a repentance not to be regretted; but the sorrow of the world finally produces death.

And do not follow the customs of the present age, but be transformed by the entire renewal of your minds, so that you may learn by experience what God's will is--that will which is good and beautiful and perfect.