2 “And before the Angels will I sing unto You.” Not before men will I sing, but before the Angels. My song is my joy; but my joy in things below is before men, my joy in things above before the Angels. For the wicked knows not the joy of the just: “There is no joy, says my God, to the wicked.” The wicked rejoices in his tavern, the martyr in his chain. In what did that holy Crispina rejoice, whose festival is kept today? She rejoiced when she was being seized, when she was being carried before the judge, when she was being put into prison, when she was being brought forth bound, when she was being lifted up on the scaffold, when she was being heard, when she was being condemned: in all these things she rejoiced; and the wretches thought her wretched, when she was rejoicing before the Angels.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)