What does Psalm 18:24 mean?

David repeats his claim that the Lord delivered him from his enemies in part as a reward for righteousness. Part of this celebration involves David's victory over Saul (2 Samuel 22:1). Even against that enemy, David demonstrated a "clean" approach, deliberately passing up at least two opportunities to assassinate Saul (1 Samuel 24:4–11; 26:1–25).

The Lord is gracious; He grants righteousness to those who believe on His Son (2 Corinthians 5:21). He rewards the righteous—though eternal salvation comes only through faith (Titus 3:5). Addressing the church at Smyrna, the risen Lord promised, "Be faithful unto death, and I will give you the crown of life" (Revelation 2:10). Psalm 84:11 promises: "The LORD God is a sun and shield; the LORD bestows favor and honor. No good thing does he withhold from those who walk uprightly." Proverbs 25:22 promises a reward to the person who treats his enemy kindly.

Believers who honor the Lord by leading a life of righteousness can anticipate a reward when Jesus comes again. The apostle Paul expected to receive the crown of righteousness at Christ's return (2 Timothy 4:8), and Jesus promised, "Behold, I am coming soon, bringing my [reward] with me, to repay each one for what he has done" (Revelation 22:12).