Isaiah 53 is the Old Testament's most concentrated statement of what FC SD III calls imputation: the Lord laying on the Servant the iniquity of all, and the Servant bearing the chastisement that brings peace. He was pierced for our transgressions; He was crushed for our iniquities. All we like sheep have gone astray; we have turned every one to his own way; and the Lord has laid on Him the iniquity of us all. The Servant who bore this was not guilty; He had done no violence, and there was no deceit in His mouth. The transaction Isaiah 53 describes is therefore entirely substitutionary: the iniquity that belonged to the many was placed on the One, and the peace that belongs to the One was granted to the many.
FC SD III is the doctrinal account of how this transaction accomplishes the sinner's justification. Psalm 103:12's "as far as the east is from the west, so far does He remove our transgressions from us" is the doxological statement of what Isaiah 53's substitution accomplishes. The removal is complete and the distance is absolute, not because the transgressions were trivial but because they were borne by Another who carried them that far away. Psalm 103's broader context grounds this in God's own character: He forgives all iniquity; He redeems life from the pit; He crowns with steadfast love and mercy. The removal described in verse 12 rests on the same compassion and costly love Isaiah 53 portrays in the Servant's bearing of our sorrows. FC SD III's defense of imputation as the sole ground of justification is the protection of the distance Psalm 103 celebrates.
| Term | What It Means |
|---|---|
| Active and passive obedience | FC SD III's twofold account of Christ's substitution. Active obedience: Christ voluntarily placed Himself under the law in our stead and fulfilled its demands perfectly from birth to death. Passive obedience: He bore the law's penalty in His suffering and death. Both are imputed to faith. |
| Iustitia aliena | Alien righteousness: the righteousness that belongs to Christ and is reckoned to faith, entirely external to the believer. It is alien in the sense of coming from outside, not in the sense of being foreign or hostile. The ground of the believer's standing is outside herself, in Christ's completed obedience. |
| Osiander vs. Stancar | The two errors FC SD III corrects simultaneously. Osiander: we are justified by God's essential divine nature infused internally. Stancar: we are justified by Christ's human nature alone. FC SD III: we are justified by the entire obedience of the entire Person, who is simultaneously God and man. |
| Particulae exclusivae | The exclusive particles: by grace, without merit, without law, without works, not of works. These phrases in Paul's letters entirely separate Christ's merit from any human contribution. Faith justifies not as a virtuous act but as the empty hand that receives the alien righteousness offered in the Gospel. |
FC SD III's doctrinal precision about the alien righteousness of Christ is the systematic form of what Isaiah 53 describes narratively. The Servant's life is laid out in the chapter as a series of substitutions: He bore our griefs, He carried our sorrows, He was wounded for our transgressions, He was crushed for our iniquities, the chastisement that brought us peace was upon Him, with His stripes we are healed. Every element is the Servant's side of the exchange; our side is entirely passive. We have turned every one to his own way; the Lord has laid on Him the iniquity of us all. The sinners contribute the iniquity; the Servant bears it. They contribute nothing to the bearing.
This is the transaction FC SD III calls imputation, understood in its full twofold form. The Servant not only bore the penalty of the law in His suffering and death, which is His passive obedience. He also fulfilled the law's demands perfectly, living the life of complete righteousness that the many who turned to their own way had failed to live. This active obedience, His perfect law-fulfillment from birth to death, is as much a part of the imputed righteousness as the passive bearing of punishment.
FC SD III's most important pastoral structural claim is its insistence on keeping justification and renewal strictly separate as doctrinal categories. The Confession acknowledges that true faith always produces renewal and good works, and that the Holy Spirit works genuine transformation in the believer. What it refuses is the inclusion of this renewal in the article of justification. The reason is precise: in the present life, the believer's inner renewal is always incomplete and impure because of the corrupt flesh. If justification depended even partially on the quality of the believer's renewal, no troubled conscience could stand before God's judgment, because the conscience would always find imperfection wherever it looked.
Psalm 103:12's east-to-west removal of transgressions requires the same separation. The distance of the removal is absolute precisely because it does not depend on any progress the penitent person has made toward being less transgressing. The transgressions were laid on the Servant of Isaiah 53, who bore them entirely; the removal of Psalm 103 describes the consequence of that bearing. If any portion of the transgressions remained with the believer pending the completion of her renewal, the east-to-west distance would be reduced to something manageable but not ultimate. FC SD III's insistence that justification rests solely on the imputed obedience of Christ is the protection of the absolute distance Psalm 103 celebrates.
FC SD III was written partly to settle the controversy between Osiander and Stancar about how Christ is our righteousness. Osiander taught that believers are justified by the essential righteousness of God's divine nature dwelling in them internally, turning justification into a mystical infusion of holiness. Stancar reacted against this by arguing that Christ is our righteousness according to His human nature alone. The Formula rejects both positions with the same logic: neither the divine nature alone nor the human nature alone is what is imputed, but the entire obedience of the entire Person who is simultaneously God and man.
The pastoral consequence of Osiander's error is the same one FC Ep III identified: it forces the believer to look inward at her own spiritual transformation for assurance, because the righteousness that justifies her is inside her. But inward inspection always finds imperfection, which means assurance built on interior renewal always fluctuates with the quality of that renewal. Isaiah 53's transaction is entirely external: the Lord laid our iniquity on the Servant who is outside us, and the Servant's obedience is what is reckoned to us. Psalm 103:12's east-to-west removal is the consequence of an entirely external act. FC SD III's defense of the alien, imputed righteousness of the whole Person is the protection of the conscience that needs assurance to rest on something that does not fluctuate with her spiritual condition.
Isaiah 53's Servant who bore our griefs, carried our sorrows, was crushed for our iniquities, and made many righteous by bearing their iniquities is the one in whom the active and passive obedience of the entire Person of Christ are united; and Psalm 103:12's east-to-west removal of our transgressions is the consequence of what that bearing accomplished. FC SD III's imputation of the alien righteousness of Christ's complete obedience to faith is the doctrinal account of how the transaction Isaiah 53 describes produces the removal Psalm 103 celebrates: the iniquity was laid on Him, He bore it completely, and the distance between the forgiven person and her former transgressions is now as great as the distance between the two horizons of the earth.