How do we know good works are a result of a renewed heart?

The transformation of a believer's heart is pivotal for producing good works, as seen in Luke 6:43-45. Jesus contrasts a good man, whose heart has been renewed by grace, with an evil man, highlighting that only a heart changed by God can bear good fruit. While unbelievers may perform acts of kindness, the heart of fallen man cannot produce works that are perfect or pleasing to God. The good works that flow from a believer's heart are reflections of God’s grace at work within them, evidencing their status as new creations who have been empowered to serve and glorify God.