ἱερατεύω (cl. = ἱεράομαι) [in LXX chiefly for כָּהַן pi. ;] to be a priest, officiate as a priest: Luk.1:8 (the word is frequently in Inscr.; see LS, see word; Deiss., BS, 215; LAE, 70; Cremer, 734).† (AS)
STRONG'S WORD STUDY
G2407 — ἱερατεύω
hierateuō · to serve as priest · Greek