Isaiah 11:5

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

Cross References (ranked by relevance)

Ephesians 6:14

Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;

2 Corinthians 6:7

By the word of truth, by the power of God, by the armour of righteousness on the right hand and on the left,

Isaiah 59:17

For he put on righteousness as a breastplate, and an helmet of salvation upon his head; and he put on the garments of vengeance for clothing, and was clad with zeal as a cloak.

Isaiah 25:1

O Lord, thou art my God; I will exalt thee, I will praise thy name; for thou hast done wonderful things; thy counsels of old are faithfulness and truth.

Revelation 3:14

And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God;

Revelation 1:13

And in the midst of the seven candlesticks one like unto the Son of man, clothed with a garment down to the foot, and girt about the paps with a golden girdle.

1 Peter 4:1

Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;

Hosea 2:20

I will even betroth thee unto me in faithfulness: and thou shalt know the LORD.

Psalm 93:1

The LORD reigneth, he is clothed with majesty; the LORD is clothed with strength, wherewith he hath girded himself: the world also is stablished, that it cannot be moved.

Hebrews 2:17

Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.