Heart transplant - spiritually

Jeremiah 17:9 (Berean Study Bible)

The heart is deceitful above all things and beyond cure - who can understand it?

A true saint knows what evil lurks in one's heart. They have no illusions about their own immoral intent and stake no claim to their sainthood. A saint also understands that the human heart is fundamentally evil and only a radical surgery and transplant by the Holy Spirit can redeem one's soul. Such a spiritually transplanted heart is truly blessed. Amen.