breastplateShell, shield, body armour, a cover to protect the chest and the main organs of the body. DTP We are called to put on the full armour of God and one piece of that armour is the breastplate of righteousness; it covers all our vital organs and when the Father looks at us, He sees that we are covered, not by our righteousness, but Christ's righteousness.be set in the ephod and in the breastplate Ex 25:7he put on righteousness as a breastplate Isa 59:17having on the breastplate of righteousness Eph 6:14sober, putting on the breastplate of faith 1 Thes 5:8