22. But the Lord is my Stronghold, and my God the Refuge of my confidence.
Let them preach, rage, and slaughter all they please! I am safe against them and mightily defended, for God is my Stronghold. Our teaching must abide, their fiction must pass away; for God is our Stronghold. Therefore we shall remain safe against them both here and hereafter, for our God is our Refuge; He makes us bold and secure. Not only that, but as a God of vengeance He will also destroy them, as the next verse says:
23. He will bring back on them their iniquity and wipe them out for their wickedness; the Lord our God will wipe them out.
Here is the ultimate and certain judgment: God will not let their wickedness go unnoticed but will wipe them all out in their wickedness, and their wickedness will stop. And this will be done by “our God,” whose Word we speak and whom they do not regard as God at all, supposing as they do that God is on their side, as we have heard above. Whoever believes this and is instructed by God can be patient and permit the wicked to rage, for he considers their end and waits it out.
The Four Psalms of Comfort
Luther’s works, vol. 14:
Selected Psalms III