The Word of the Lord Will Prevail
The Psalmist looks around and finds that the faithful seem to have vanished, the fake, empty words of the world seem to be prevailing. But the Lord hears the Psalmist’s cry and responds. The Words of the Lord are pure, enduring forever. The promises of the Lord, including that he will preserve the godly to the end, are certain.
Pslams 1-72 (Tyndale Old Testament Commentaries) by Derek Kidner
Commentary on the Psalms by John Calvin