Ephesians 6:14

Stand therefore, being girded about as to your loins with truth, and being invested with the breastplate of righteousness,

2 Corinthians 6:7

by the word of truth, by the power of God; through the arms of righteousness right and left,

Hebrews 2:17

Therefore he ought in all things to be made like unto his brethren, in order that he might be a merciful and faithful High Priest in things appertaining to God, to the end that he may atone for the sins of the people.

1 Peter 4:1

Therefore Christ having suffered in the flesh, you also arm yourselves with the same mind: because the one having suffered in carnality has ceased from sin;

1 John 1:9

If we confess our sins, he is faithful and righteous that he may forgive us our sins, and cleanse us from all unrighteousness.

Revelation 1:13

and in the midst of the candlesticks one like the Son of man, clothed with a garment down to his feet, and girded about the breast with a golden girdle.

Revelation 3:14

And to the angel of the church in Laodicea write; The Amen, the faithful and true witness, the beginning of the creation of God, says these things;

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

Righteousness

2 Corinthians 6:7
by the word of truth, by the power of God; through the arms of righteousness right and left,
Ephesians 6:14
Stand therefore, being girded about as to your loins with truth, and being invested with the breastplate of righteousness,
1 Peter 4:1
Therefore Christ having suffered in the flesh, you also arm yourselves with the same mind: because the one having suffered in carnality has ceased from sin;
Revelation 1:13
and in the midst of the candlesticks one like the Son of man, clothed with a garment down to his feet, and girded about the breast with a golden girdle.

And faithfulness

Hebrews 2:17
Therefore he ought in all things to be made like unto his brethren, in order that he might be a merciful and faithful High Priest in things appertaining to God, to the end that he may atone for the sins of the people.
1 John 1:9
If we confess our sins, he is faithful and righteous that he may forgive us our sins, and cleanse us from all unrighteousness.
Revelation 3:14
And to the angel of the church in Laodicea write; The Amen, the faithful and true witness, the beginning of the creation of God, says these things;

General references

Galatians 5:15
But if you bite and devour one another, take heed that you may not be consumed one of another.