Strong's Concordance

Original word: βραβεύω
Transliteration: brabeuó
Definition (short): rule
Definition (full): to act as umpire

NAS Exhaustive Concordance

Word Origin: from the same as brabeion
Definition: to act as umpire
NASB Translation: rule (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From the same as brabeion; to arbitrate, i.e. (genitive case) to govern (figuratively, prevail) -- rule.

see GREEK brabeion

KJV: And let the peace of God rule in your hearts, to the which also ye are called in one body; and be ye thankful.
NASB: Let the peace of Christ rule in your hearts, to which indeed you were called in one body; and be thankful.