Athanasius of Alexandria, on Ps 16:13

“Arise, O Lord, disappoint him and supplant him; deliver my soul from the wicked one: thy sword”

“The soul of each of the righteous—clearly of those who pull sinners from impiety to piety—is as a sharpened sword against the spirits of evil. This sword, O our Lord, which you sharpened against your enemies, save from the enemies of your hand.”

Imported from an open dataset — not yet checked against the printed edition.