Abbott-Smith Manual Greek Lexicon
ἱεράτευμα (G2406)
2 † ἱεράτευμα , -τος, τό ( ἱερατεύω ), [in LXX: βασίλειον ἱ. , Ex 19:6 ( כֹּהֲנִים מַמְלֶכֶת ) 23:22 , II Mac 2:17 *;] a priesthood , body of priests : ἱ ἅγιον , I Pe 2:5 ; βασ. ἱ , I Pe 2:9 (LXX, Ex 19:6 ).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain