Dictionary entry

ἱερατεύω

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

ἱερατεύω

(cl. = ἱεράομαι), [in LXX chiefly for כּהן pi.;]

to be a priest, officiate as a priest: Lk 1:8 (the word is freq. in Inscr.; v. LS, s.v.; Deiss., BS, 215; LAE, 70; Cremer, 734).†