ἱερατεύω G2407
hierateúō · hee-er-at-yoo'-o · Verb
prolongation from ἱερεύς; to be a priest, i.e. perform his functions:--execute the priest's office.
1 Occurrence in the King James Bible
Luke 1:8And it came to pass, that while he executed the priest’s office before God in the order of his course,