How do we know that the doctrine of regeneration is true?

The doctrine of regeneration is a fundamental aspect of Reformed theology, supported explicitly by Scripture. In John 3, Jesus declares that 'except a man be born again, he cannot see the kingdom of God.' This necessity highlights the reality that regeneration, or being born again, is a divine act initiated by the Holy Spirit. Additionally, believers' testimonies of their lives before and after regeneration serve as personal evidence of this truth. In moments of divine illumination, when a person sees Christ clearly and turns to Him in faith, it confirms the wondrous work of the Holy Spirit and affirms the reality of being a 'new creature' in Christ. Thus, the combination of Scriptural affirmation and personal transformation collectively validates the truth of regeneration.