I am not addressing my own people, nor my fellow citizens of the holy Romans, but those who are now become citizens of demons by reason of their evil works. They have chosen, by their hostile deeds, to live in death; comrades of the Scotti and Picts and of all who behave like apostates, bloody men who have steeped themselves in the blood of innocent Christians. The very same people I have begotten for God; their number beyond count, I myself confirmed them in Christ.

Letter to the Soldiers of Coroticus (c.450?)