The religion of the Britons was one of the most considerable parts of their government; and the druids, who were their priests, possessed great authority among them. Besides ministering at the altar, and directing all religious duties, they presided over the education of youth; they enjoyed an immunity from wars and taxes; they possessed both the civil and criminal jurisdiction; they decided all controversies among states as well as among private persons, and whoever refused to submit to their decree was exposed to the most severe penalties. The sentence of excommunication was pronounced against him: