ἀρχιεράρχης

From LSJ

ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do

Source

Spanish (DGE)

-ου, ὁ gran jerarca, obispo τῶν ἐπουρανίων Rom.Mel.63.βʹbis.1.