Extended Strong's Greek Lexicon (Abbott-Smith based)
priesthood
Usage: ἱεράτευμα, -τος, τό (ἱερατεύω), [in LXX: βασίλειον ἱ., Exo.19:1-25 6:1-30 (כֹּהֵן מַמְלָכָה) Exo.23:22, 2Ma.2:17 * ;] a priesthood, body of priests: ἱ ἅγιον, 1Pe.2:5; βασ. ἱ, 1Pe.2:9 (LXX, Ex, l.with).† (AS)