Tradition
St. Augustine
The Enarrations, or Expositions, on the Psalms
Psalm 49 › Section 2
2. Therefore let even the ungodly hear: “Hear ye this, all you nations.” Let the just also hear, who have not heard to no purpose, and who rather rule the world than are ruled by the world: “with ears ponder, all you that dwell in the world.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)