16 And further, beloved brethren, what is it, what a great thing is it, how pertinent, how necessary, that pestilence and plague which seems horrible and deadly, searches out the righteousness of each one, and examines the minds of the human race, to see whether they who are in health tend the sick; whether relations affectionately love their kindred; whether masters pity their languishing servants; whether physicians do not forsake the beseeching patients; whether the fierce suppress their violence; whether the rapacious can quench the ever insatiable ardour of their raging avarice even by the fear of death; whether the haughty bend their neck; whether the wicked soften their boldness; whether, when their dear ones perish, the rich, even then bestow anything, and give, when they are to die without heirs. Even although this mortality conferred nothing else, it has done this benefit to Christians and to God's servants that we begin gladly to desire martyrdom as we learn not to fear death. These are trainings for us, not deaths: they give the mind the glory of fortitude; by contempt of death they prepare for the crown.
Source: The Treatises of Cyprian (New Advent)