ἀρχισυναγωγέω
From LSJ
τὸν ἰητρὸν δοκέει μοι ἄριστον εἶναι πρόνοιαν ἐπιτηδεύειν → it appears to me a most excellent thing for the physician to cultivate prognosis
English (LSJ)
be president of the assembly; v. ἀρχισυνάγωγος.
Spanish (DGE)
ser presidente de la asamblea religiosa, IG 10(2).288.3, 289.4 (Tesalónica II d.C.).