What does Psalm 55:23 mean?
In this closing verse David expresses confidence in the Lord to deal with his earthly enemies. This is not only a prayer of affirmation, but a warning to those who violate God's will. "Blood and treachery" in this context suggests those who are dishonest and violent. This psalm was likely written in response to the rebellion of Absalom, David's son (Psalm 55:2–8; 2 Samuel 15:14), as aided by Ahithophel, David's former advisor (Psalm 55:12–13; 2 Samuel 15:31).Many biblical figures who opposed God suffered death and destruction (Exodus 3:20; Judges 5:26; 2 Kings 9:30, 33; Acts 12:23). Absalom, who attempted to overthrow his father, was killed after a battle (2 Samuel 18:9, 14–15). Ahithophel took his own life when his advice was not followed (2 Samuel 17:23). Judas Iscariot, history's most infamous traitor, also killed himself (Matthew 27:5). Regardless of what happens in this life, those who reject the Lord will face eternal damnation. Revelation 20:15 depicts the Lord throwing unbelievers into the lake of fire, at the Great White Throne Judgment. Fortunately, God offers eternal life to whoever believes on His Son as Savior (John 3:16–18).
Psalm 55:22–23 concludes the song by advising all men to rely entirely on God. David trusted the Lord to "sustain" him, even in hard times, such as those described in this psalm. David knew that good people could experience violence and persecution, but in the end, their place with God was secure. In contrast, evil men like those attacking David were assured of swift destruction.
David begins this song with a prayer for rescue, likely from his rebelling son, Absalom (2 Samuel 15:1–12). David is pained because of a close ally's betrayal; this would refer to Ahithophel, who sided with the rebels (2 Samuel 15:31). This situation creates intense fear. However, David is confident God will rescue him. He is fully assured that those who attack him will be humbled and judged by the Lord.