Of Decius, Valerian, and Aurelian, who experienced a Miserable End in consequence of their Persecution of the Church
To you, Decius, I now appeal, who has trampled with insult on the labors of the righteous: to you, the hater of the Church, the punisher of those who lived a holy life: what is now your condition after death? How hard and wretched your present circumstances! Nay, the interval before your death gave proof enough of your miserable fate, when overthrown with all your army on the plains of Scythia, you exposed the vaunted power of Rome to the contempt of the Goths. You, too, Valerian, who manifested the same spirit of cruelty towards the servants of God, hast afforded an example of righteous judgment. A captive in the enemies' hands, led in chains while yet arrayed in the purple and imperial attire, and at last your skin stripped from you, and preserved by command of Sapor the Persian king, you have left a perpetual trophy of your calamity. And thou, Aurelian, fierce perpetrator of every wrong, how signal was your fall, when, in the midst of your wild career in Thrace, you were slain on the public highway, and filled the furrows of the road with your impious blood!
Source: Oration of Constantine "to the Assembly of the Saints" (New Advent)