How does the new birth relate to having a pure heart?

The new birth, or regeneration, is a transformative work of the Holy Spirit that endows believers with a pure heart. As Ezekiel 36:26 states, God promises to give His people a new heart and a new spirit. This new heart is essential for understanding and responding to God appropriately. 1 John 3:9 explains that those born of God cannot commit sin, illustrating the capacity of this new nature to reflect the purity of God Himself. Without the new birth, one cannot possess a heart that is aligned with God's righteousness, rendering the pursuit of purity in one's life an impossibility.