Isaiah 11:5

And righteousness shall be the belt of his waist, and faithfulness the belt of his loins.

Isaiah 25:1

O LORD, thou are my God. I will exalt thee. I will praise thy name. For thou have done wonderful things, [even] counsels of old, in faithfulness [and] truth.

Ephesians 6:14

Stand ye therefore having girded your loins with truth, and having put on the breastplate of righteousness,

Psalm 93:1

LORD reigns! He is clothed with majesty. LORD is clothed with strength; he has girded himself with it. The world also is established that it cannot be moved.

Isaiah 59:17

And he put on righteousness as a breastplate, and a helmet of salvation upon his head. And he put on garments of vengeance for clothing, and was clad with zeal as a mantle.

Hosea 2:20

I will even betroth thee to me in faithfulness, and thou shall know LORD.

2 Corinthians 6:7

in word of truth, in power of God, through the weapons of righteousness of the right hand and of the left,

Hebrews 2:17

Therefore he was obligated to be made like his brothers in accordance with all things, so that he might become a merciful and faithful high priest in things toward God, in order to make reconciliation for the sins of the people.

1 Peter 4:1

Therefore of Christ having suffered in flesh for us, arm ye yourselves also with the same mentality, because he who has suffered in flesh has ceased from sin,

1 John 1:9

If we confess our sins, he is faithful and righteous so that he will forgive us our sins, and cleanse us from every unrighteousness.

Revelation 1:13

And in the midst of the seven lampstands, resembling a son of man, he who was clothed down to the foot, and girded about with a golden belt at the breasts.

Revelation 3:14

And to the agent of the congregation in Laodicea write, These things says the Truly, the faithful and TRUE witness, the primacy of the creation of God:

Treasury of Scripture Knowledge

Summary

And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins.

Bible References

Righteousness

Isaiah 59:17
And he put on righteousness as a breastplate, and a helmet of salvation upon his head. And he put on garments of vengeance for clothing, and was clad with zeal as a mantle.
Psalm 93:1
LORD reigns! He is clothed with majesty. LORD is clothed with strength; he has girded himself with it. The world also is established that it cannot be moved.
2 Corinthians 6:7
in word of truth, in power of God, through the weapons of righteousness of the right hand and of the left,
Ephesians 6:14
Stand ye therefore having girded your loins with truth, and having put on the breastplate of righteousness,
1 Peter 4:1
Therefore of Christ having suffered in flesh for us, arm ye yourselves also with the same mentality, because he who has suffered in flesh has ceased from sin,
Revelation 1:13
And in the midst of the seven lampstands, resembling a son of man, he who was clothed down to the foot, and girded about with a golden belt at the breasts.

And faithfulness

Isaiah 25:1
O LORD, thou are my God. I will exalt thee. I will praise thy name. For thou have done wonderful things, [even] counsels of old, in faithfulness [and] truth.
Hosea 2:20
I will even betroth thee to me in faithfulness, and thou shall know LORD.
Hebrews 2:17
Therefore he was obligated to be made like his brothers in accordance with all things, so that he might become a merciful and faithful high priest in things toward God, in order to make reconciliation for the sins of the people.
1 John 1:9
If we confess our sins, he is faithful and righteous so that he will forgive us our sins, and cleanse us from every unrighteousness.
Revelation 3:14
And to the agent of the congregation in Laodicea write, These things says the Truly, the faithful and TRUE witness, the primacy of the creation of God:

General references

Exodus 40:12
And thou shall bring Aaron and his sons to the door of the tent of meeting, and shall wash them with water.
Psalm 9:8
and he will judge the world in righteousness. He will minister justice to the peoples in uprightness.
Galatians 5:15
But if ye bite and devour each other, watch out that ye be not consumed by each other.