12 Again, he returns to these last, who in the same company of enemies are to be made ashamed for this purpose, that they may not be ashamed for ever: and for this purpose to be destroyed in as far as they are wicked, that being made good they may be found alive for ever. For having said of them, “Let them be ashamed and perish,” he instantly adds, “and let them know that Your name is the Lord, You are only the Most Highest in all the earth”. Coming to this knowledge, let them be so confounded as to please God: let them so perish, as that they may abide.
“Let them know,” he says, “that Your name is the Lord:” as if whoever else are called lords are named so not truly but by falsehood, for they rule but as servants, and compared with the true Lord are not lords; as it is said, I Am that I Am: as if those things which are made are not, compared with Him by whom they are made. He adds, “You only are the Most Highest in all the earth:” or, as other copies have it, “over all the earth;” as it might be said, in all the heaven, or over all the heaven: but he used the latter word in preference, to depress the pride of earth.
For earth ceases to be proud, that is, man ceases, to whom it was said, “You are dust;” and “why is earth and ashes proud?” when he says that the Lord is the Most Highest above all the earth, that is, that no man's thoughts avail against those “who are called according to His purpose,” and of whom it is said, “If God is for us, who can be against us?”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)