4 “I have not sat with the council of vanity”. I have not chosen to give my heart to them who endeavour to provide, what is impossible, how they may be blessed in the enjoyment of things transitory. “And I will not enter in with them that work wickedly.” And since this is the very cause of all wickedness, therefore I will not have my conscience hid, with them that work wickedly.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)