Gildas The Wise - On The Ruin of Britain Part III - c. 540 AD

De Excidio et Conquestu Britanniae (Latin: On the Ruin and Conquest of Britain, sometimes just On the Ruin of Britain) is a work written in Latin by the 6th-century AD British cleric St Gildas. It is a sermon in three parts condemning the acts of Gildas' contemporaries, both secular and religious, whom he blames for the dire state of affairs in sub-Roman Britain. It is one of the most important sources for the history of Britain in the 5th and 6th centuries, as it is the only significant source for the period written by a near contemporary of the people and events described.

PART III.

Quotations from Scripture, made consecutively in the order of books, denouncing wicked Princes.