Repentance Proven by Fruit

I preached first to those in Damascus, then in Jerusalem and throughout all Judea, and also to the Gentiles, that all must repent of their sins and turn to God - and prove they have changed by the good things they do. (Acts 26:20 NLT)

Bear fruit in keeping with repentance. (Matthew 3:8 ESV)

Produce fruit in keeping with repentance. And do not begin to say to yourselves, 'We have Abraham as our father.' For I tell you that out of these stones God can raise up children for Abraham. (Luke 3:8 NIV)