What does the Bible say about God's work in the hearts of people?

According to the Scriptures, God's work in the hearts of His people is transformative and life-giving. In Luke 3, we see that when God brings salvation, He comes with power and glory, changing the hearts of His people fundamentally. They begin to know themselves as creatures before the living God, recognizing their need for Him. This change is not by human effort but through divine grace, where He stirs the heart and helps individuals turn from their fleshly nature to Him, revealing the Lord Jesus Christ as their salvation. Consequently, God's grace is effectual, sustaining His people in faith until the end.