Proverbs 20:27-30 NIV

[27] The human spirit is the lamp of the Lord that sheds light on one’s inmost being. [28] Love and faithfulness keep a king safe; through love his throne is made secure. [29] The glory of young men is their strength, gray hair the splendor of the old. [30] Blows and wounds scrub away evil, and beatings purge the inmost being.