Wisdom 5:18

18 He shall put on righteousness as a breastplate, and true judgment instead of an helmet.

Wisdom 5:18 In-Context

16 Therefore shall they receive a glorious kingdom, and a beautiful crown from the Lord's hand: for with his right hand shall he cover them, and with his arm shall he protect them.
17 He shall take to him his jealousy for complete armour, and make the creature his weapon for the revenge of his enemies.
18 He shall put on righteousness as a breastplate, and true judgment instead of an helmet.
19 He shall take holiness for an invincible shield.
20 His severe wrath shall he sharpen for a sword, and the world shall fight with him against the unwise.

The Brenton translation of the Septuagint is in the public domain.