council · 314
Constantine, newly master of the West, convened the western bishops at Arles in 314 to settle the Donatist appeal — the first council an emperor called. It confirmed the judgment against the Donatists, rejected rebaptism of heretics baptized in the Trinity, and left 22 canons.
The Donatist appeal: were sacraments given by clergy who lapsed under persecution valid?
The judgment against the Donatists confirmed; rebaptism of validly baptized heretics rejected; 22 canons.