Regeneration (the New Birth) is a change of the heart, that is, the whole person (intellect, desires, and will). It is wrought by the Holy Spirit Who makes those spiritually alive who were once dead in trespasses and sins, enlightening their minds spiritually and saving them to understand the Word of God, and renewing their whole nature, so that they love Christ and follow Him in holiness. It is a mysterious work of God’s free and special grace alone.
John 3:3-8; 2 Corinthians 5:17; Ephesians 2:4-5