What does Psalm chapter 149 mean?
This motivating song rouses the people to praise God and commit themselves to serving Him. The psalm begins and ends with the term usually translated as "hallelujah," which literally means "praise the Lord!"The psalmist's first focus is on praise and worship. Israel is the new name given to the nation's founder, Jacob (Genesis 32:28). Zion is another name for Jerusalem (2 Samuel 5:7; 1 Kings 8:1), both used as a "metonym"—a placeholder or stand-in—for the entire nation of Israel. These chosen people are called on to offer singing, dancing, and music to God. Since God is pleased with His people, those who submit to Him in faith should also experience joy. This gratitude should be apparent at all times—even when at rest (Psalm 149:1–5)!
These same people—ancient Israel—are called to praise God while fighting to com-plete His will on earth. This was Israel's mission when they came into Canaan (Deuteronomy 7:1–5; 9:4–5). At the time this psalm was written, Israel had failed to accomplish this; it was unlikely they ever would. A call for swords here is not entirely symbolic, but it's likely more about anticipating the Lord's eventual victory (Psalm 45:3–6) than planning an immediate battle (Psalm 149:6–9).