John Cassian, The Institutes IX.9: Of another sort of dejection which produces despair of salvation

There is, too, another still more objectionable sort of dejection, which produces in the guilty soul no amendment of life or correction of faults, but the most destructive despair: which did not make Cain repent after the murder of his brother, or Judas, after the betrayal, hasten to relieve himself by making amends, but drove him to hang himself in despair.