#2418 ἱερουργέω hierourgeo {hee-er-oorg-eh'-o}

 from a compound of G2411 and the base of G2041; TDNT - 3:251,349; v

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) to minister in the manner of a priest, minister in priestly service
    1a) of those who defend the sanctity of the law by undergoing a
        violent death
    1b) of the preaching of the gospel

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - minister 1; 1

—Exhaustive Concordance (KJV Translation Frequency & Location)