7 “And He shall bring forth your judgment as the noon-day.” That is to say, “as the clear light.” It was too little to say, “as the light.” For we call it “light” already, even when it but dawns: we call it light even while the sun is rising. But never is the light brighter than at mid-day. Therefore He will not only “bring forth your righteousness as the light,” but “your judgment shall be as the noon-day.” For now do you make your “judgment” to follow Christ. This is your purpose: this is your choice: this is your “judgment.”...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)