14 “According to the multitude of their ungodlinesses drive them out:” that is, drive them out far away. For this is “according to the multitude of their ungodlinesses,” that they should be driven out far away. The ungodly then are driven out from that inheritance, which is possessed by knowing and seeing God: as diseased eyes are driven out from the shining of the light, when what is gladness to others is pain to them. Therefore these shall not stand in the morning, and see. And that expression is as great a punishment, as that which is said, “But for me it is good to cleave to the Lord,” is a great reward. To this punishment is opposed, “Enter into the joy of Your Lord;” for similar to this expulsion is, “Cast him into outer darkness.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)