What does it mean that the Lord Jesus Christ is our righteousness?

In the context of covenant theology and the doctrines of grace, the Lord Jesus Christ is our righteousness because He fulfilled every requirement of the law on our behalf. In Psalm 40:9, the psalmist declares the proclamation of God’s righteousness, which ultimately points to the work of Christ. He perfectly obeyed the moral law and bore the penalties of sin through His sacrificial death. This dual aspect—His active obedience (fulfilling the law) and passive obedience (suffering for sin)—establishes Him as the source of our righteousness. Therefore, Christians are justified not by their works but through faith in Christ, who is the righteousness that God imputes to all who believe, granting them acceptance before Him.