The town prospered, but was sacked by the Visigoths in 412. It had, by then, become largely Christianized, and from the end of the third century constituted the Ancient Diocese of Orange. No longer a residential bishopric, Arausio, as it is called in Latin, is today listed by the Roman Catholic Church as a titular see. It hosted two important synods, in 441 and 529. The Second Council of Orange was of importance in condemning what later came to be called Semipelagianism.