What does the Bible say about having a clean heart?

In Psalm 51:10, David earnestly prays, 'Create in me a clean heart, O God, and renew a right spirit within me.' This verse highlights the necessity of inner purity and spiritual renewal. The heart is likened to the seat of a person's true self, influencing emotions and actions. The Bible teaches that a clean heart is essential for a proper relationship with God, as it enables believers to live righteously and favorably in God's sight. Without a clean heart, individuals are prone to sin and are unable to effectively serve the Lord.