Strong's G2405 — ἱερατεία (noun)
hierateia (hee-er-at-ei'-ah) n.
1. priestliness, i.e. the sacerdotal function
[from G2407]
KJV: office of the priesthood, priest's office 
Root(s): G2407 
Hebrew root: ἱερατεύω
Occurrences: 2