Romans 13:4

For he is the minister of God to thee for good. But if thou doest that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, an avenger to execute wrath upon him that doeth evil.

2 Chronicles 19:6

And said to the judges, Take heed what ye do: for ye judge not for man, but for the LORD, who is with you in the judgment.

Romans 12:19

Dearly beloved, avenge not yourselves, but rather give place to wrath: for it is written, Vengeance is mine; I will repay, saith the Lord.

1 Thessalonians 4:6

That no man go beyond and defraud his brother in any matter: because the Lord is the avenger of all such, as we also have forewarned you and testified.

Numbers 35:19-27

The avenger of blood himself shall slay the murderer: when he meeteth him, he shall slay him.

Joshua 20:5

And if the avenger of blood shall pursue him, then they shall not deliver the slayer into his hand; because he smote his neighbor ignorantly, and had not hated him before.

Joshua 20:9

These were the cities appointed for all the children of Israel, and for the stranger sojourning among them, that whoever should kill any person unawares might flee thither, and not die by the hand of the avenger of blood, until he stood before the congregation.

1 Kings 10:9

Blessed be the LORD thy God, who delighted in thee, to set thee on the throne of Israel: because the LORD loved Israel for ever, therefore he made thee king, to do judgment and justice.

Psalm 82:2-4

How long will ye judge unjustly, and accept the persons of the wicked? Selah.

Proverbs 16:14

The wrath of a king is as messengers of death: but a wise man will pacify it.

Proverbs 20:2

The fear of a king is as the roaring of a lion: whoever provoketh him to anger sinneth against his own soul.

Proverbs 20:8

A king that sitteth on the throne of judgment scattereth away all evil with his eyes.

Proverbs 20:26

A wise king scatterreth the wicked, and bringeth the wheel over them.

Proverbs 24:23-24

These things also belong to the wise. It is not good to have respect of persons in judgment.

Proverbs 31:8-9

Open thy mouth for the dumb in the cause of all such as are appointed to destruction.

Ecclesiastes 8:2-5

I counsel thee to keep the king's commandment, and that in regard of the oath of God.

Isaiah 1:17

Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.

Jeremiah 5:28

They have become fat, they shine: yes, they surpass the deeds of the wicked: they judge not the cause, the cause of the fatherless, yet they prosper; and the right of the needy do they not judge.

Ezekiel 22:27

Her princes in the midst of her are like wolves ravening the prey, to shed blood, and to destroy souls, to get dishonest gain.

Ezekiel 25:14

And I will lay my vengeance upon Edom by the hand of my people Israel: and they shall do in Edom according to my anger and according to my fury; and they shall know my vengeance, saith the Lord GOD.

Micah 3:1-4

And I said, Hear, I pray you, O heads of Jacob, and ye princes of the house of Israel: Is it not for you to know judgment?

Micah 3:9

Hear this, I pray you, ye heads of the house of Jacob, and princes of the house of Israel, that abhor judgment, and pervert all equity.

Romans 13:6

For, for this cause ye pay tribute also: for they are God's ministers, attending continually upon this very thing.

Treasury of Scripture Knowledge

Summary

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 to execute wrath upon him that doeth evil.

Bible References

He is

Romans 13:6
For, for this cause ye pay tribute also: for they are God's ministers, attending continually upon this very thing.
1 Kings 10:9
Blessed be the LORD thy God, who delighted in thee, to set thee on the throne of Israel: because the LORD loved Israel for ever, therefore he made thee king, to do judgment and justice.
2 Chronicles 19:6
And said to the judges, Take heed what ye do: for ye judge not for man, but for the LORD, who is with you in the judgment.
Psalm 82:2
How long will ye judge unjustly, and accept the persons of the wicked? Selah.
Proverbs 24:23
These things also belong to the wise. It is not good to have respect of persons in judgment.
Proverbs 31:8
Open thy mouth for the dumb in the cause of all such as are appointed to destruction.
Ecclesiastes 8:2
I counsel thee to keep the king's commandment, and that in regard of the oath of God.
Isaiah 1:17
Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.
Jeremiah 5:28
They have become fat, they shine: yes, they surpass the deeds of the wicked: they judge not the cause, the cause of the fatherless, yet they prosper; and the right of the needy do they not judge.
Ezekiel 22:27
Her princes in the midst of her are like wolves ravening the prey, to shed blood, and to destroy souls, to get dishonest gain.
Micah 3:1
And I said, Hear, I pray you, O heads of Jacob, and ye princes of the house of Israel: Is it not for you to know judgment?

Be

Proverbs 16:14
The wrath of a king is as messengers of death: but a wise man will pacify it.
Proverbs 20:2
The fear of a king is as the roaring of a lion: whoever provoketh him to anger sinneth against his own soul.

Revenger

Romans 12:19
Dearly beloved, avenge not yourselves, but rather give place to wrath: for it is written, Vengeance is mine; I will repay, saith the Lord.
Numbers 35:19
The avenger of blood himself shall slay the murderer: when he meeteth him, he shall slay him.
Joshua 20:5
And if the avenger of blood shall pursue him, then they shall not deliver the slayer into his hand; because he smote his neighbor ignorantly, and had not hated him before.
Ezekiel 25:14
And I will lay my vengeance upon Edom by the hand of my people Israel: and they shall do in Edom according to my anger and according to my fury; and they shall know my vengeance, saith the Lord GOD.

General references

Deuteronomy 19:20
And those who remain shall hear, and fear, and shall henceforth commit no more any such evil among you.
Deuteronomy 21:2
Then thy elders and thy judges shall come forth, and they shall measure to the cities which are around him that is slain:
Joshua 1:16
And they answered Joshua, saying, All that thou commandest us, we will do, and whithersoever thou sendest us, we will go.
2 Chronicles 19:5
And he set judges in the land throughout all the fortified cities of Judah, city by city,
Acts 18:16
And he drove them from the judgment-seat.