Abbott-Smith Manual Greek Lexicon
ἱερατεύω (G2407)
1 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).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain