Romans 13:4 - For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, a revenger G1558 to execute wrath upon him that doeth evil.
1 Thessalonians 4:6 - That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger G1558 of all such, as we also have forewarned you and testified.