In the sixteenth century, the Roman Catholic Church and the Lutheran Reformers parted ways over a great deal. They also agreed on a remarkable amount: that God saves sinners, that Christ’s death and resurrection were the basis of salvation, that grace was necessary, that faith was essential.
What they disagreed on, more sharply than on almost anything else, was what one Greek verb meant.
The verb was dikaioō. The disagreement was — and still is — about whether this verb means “to declare righteous” or “to make righteous.” The Council of Trent, in its session on justification in 1547, took the second position. The Reformers held the first. Whether you stand before God on Tuesday morning by trusting Christ alone, or by working out your salvation by faith plus your own growing holiness, depends on that one verb.
Luther called justification — what dikaioō names — the article on which the church stands or falls. He was not wrong.
The Word
δικαιόω (dikaioō), pronounced dee-kai-OH-oh. A verb. The family includes the noun dikaiosynē (righteousness, explored in Dikaiosyne) and the adjective dikaios (righteous, just).
The Greek family is borrowed from the courtroom. Dikē (δίκη) is “justice” — what a court hands down. Dikaios is the person who satisfies the court’s standard. Dikaioō is what the court does when it issues its verdict. To dikaioō someone is to declare them in the right.
This is the most important point in the entry, and it requires careful defense: dikaioō is what a judge does, not what a therapist does. The verb is forensic. It is declarative. It is not a verb for changing someone’s character. It is a verb for issuing a verdict about them.
Range of Meaning
The semantic range of dikaioō in the New Testament includes:
- To declare righteous, to acquit. The forensic, courtroom sense. This is the dominant sense in Paul.
- To vindicate, to prove right. “wisdom is vindicated by her deeds” (Matt 11:19, NET) — wisdom is shown to be right by what it does. Same verb, “vindication” register.
- To set right, to make just. A minority sense that does carry the “make” force rather than the “declare” force. Found in some non-Pauline contexts and in extra-biblical Greek.
- To free from a charge, to release. Acts 13:39: “and by this one everyone who believes is justified from everything from which the law of Moses could not justify you.”
In Paul, the dominant sense is the first. Romans, Galatians, and Philippians use dikaioō in a forensic, courtroom sense throughout. The judge declares the defendant in the right. This is what God does for the sinner who trusts Christ.
The “to make righteous” sense exists in the broader Greek world and shows up occasionally in the New Testament — but importing it into Romans, where Paul is consistently using the forensic sense, is the move that gave the church four centuries of confusion.
Where You’ll Meet It
“But they are justified freely by his grace through the redemption that is in Christ Jesus.” (Romans 3:24, NET)
The third and fourth chapters of Romans are where Paul lays out the doctrine in detail. The verb appears here in the present passive — God is the one doing the justifying, sinners are the ones being justified. The basis is not their works but God’s grace.
“For we consider that a person is declared righteous by faith apart from the works of the law.” (Romans 3:28, NET)
This is the sentence Luther rendered into German with the addition of “alone” — allein durch den Glauben, “by faith alone.” His Roman Catholic critics objected. Luther defended the rendering on the grounds that the German required it to make Paul’s sense come through. The Greek verb is again dikaioō. The faith is the receiving instrument; the work is God’s.
“What then shall we say that Abraham, our ancestor according to the flesh, has discovered regarding this matter? For if Abraham was declared righteous by works, he has something to boast about—but not before God. For what does the scripture say? ‘Abraham believed God, and it was credited to him as righteousness.’” (Romans 4:1–3, NET)
Paul reaches back to Abraham. Abraham believed and was dikaiōthē — declared righteous. Not after his works. Before circumcision, before any works of the law. Faith alone, righteousness imputed.
“Therefore, since we have been declared righteous by faith, we have peace with God through our Lord Jesus Christ,” (Romans 5:1, NET)
Aorist passive: dikaiōthentes — having been justified. Past tense, completed action. The verdict has been rendered. We do not work toward this justification; we live from it.
“yet we know that no one is justified by the works of the law but by the faithfulness of Jesus Christ. And we have come to believe in Christ Jesus, so that we may be justified by the faithfulness of Christ and not by the works of the law, because by the works of the law no one will be justified.” (Galatians 2:16, NET)
Paul says it again in Galatians, in a context where he is rebuking Peter for backing away from the implications. The verb appears three times in this one verse. It is so important to Paul that he is willing to risk his most important friendship over it.
And finally, the verse that has confused readers for two thousand years:
“You see that a person is justified by works and not by faith alone.” (James 2:24, NET)
James uses dikaioō too. And he denies what Paul affirms — or seems to. This is the verse that gave Luther fits and that has given the church reason to keep both books in the canon. We will return to it under “Where People Get It Wrong.”
What Confessional Lutherans Hear
In dikaioō the confessional Lutheran ear catches two notes at once.
First, the verb is forensic, not transformative. When God dikaioī the sinner, He renders a verdict. He does not first remake the sinner morally and then declare what He has made. He declares the sinner righteous on the basis of Christ’s righteousness imputed — Christ’s standing reckoned to the sinner’s account. The sinner remains a sinner; what has changed is the verdict. The Augsburg Confession, Article IV, states this without flinching: human beings “are justified as a gift on account of Christ, through faith, when they believe that they are received into grace and that their sins are forgiven on account of Christ.”
This is the place where Lutheran theology parts company with Tridentine Catholicism. The Council of Trent, in its sixth session (1547), defined justification as a process that includes both forensic declaration and inner moral transformation. The sinner is, in the Tridentine view, gradually made righteous through infused grace, faith, sacraments, and good works cooperating with grace. The Lutheran response was — and is — that this conflates justification (what God declares once-for-all) with sanctification (what the Holy Spirit works in the believer over time). Both are real. They are not the same act, and confusing them costs the gospel its certainty.
This is also where Lutheran theology has had to push back against some Reformed and Evangelical readings — the New Perspective on Paul, which treats justification as covenant-membership language; the “lordship salvation” framings that load justification with conditions about Christian growth and obedience; the moralistic-therapeutic deisms that turn justification into “God thinks you are great.” All of them, in different ways, soften what dikaioō in Paul is doing. Dikaioō declares. It does not negotiate, it does not process, it does not measure. It declares.
Second, the verb is in the passive voice for a reason. You do not dikaioō yourself. You are dikaiōthentes — having been justified, by someone else, for someone else’s sake. The active agent is God. The instrument is faith — and faith is not a work, not a contribution, not your share of the bargain. Faith is what receives. The Apology of the Augsburg Confession spends most of Article IV defending this point against Tridentine accusations of antinomianism, and the defense holds up four hundred years later. Faith is the empty hand that takes what Christ has done.
The pastoral payoff: when you wake up on Tuesday morning and your conscience says you have failed again, you do not have to wait for Sunday to be justified. You already are. The verdict has been rendered. The Word has done what the Word does. Your remaining sin does not unjustify you. Your slow sanctification does not justify you. Christ is your righteousness, and the verdict has been read.
Where People Get It Wrong
Several common ways.
The first is conflating dikaioō with sanctification. This is the Tridentine move and its modern echoes. Dikaioō in Paul is what God declares about the sinner once-for-all when faith receives Christ. Sanctification is the work of the Holy Spirit through the means of grace over the Christian’s lifetime. They are intimately related — every justified sinner is also being sanctified — but they are not the same act. Confusing them is how you turn the gospel into a list of requirements and the Christian life into anxious self-measurement.
The second is the “covenant membership” reading. Associated especially with N. T. Wright and the broader New Perspective on Paul, this view holds that dikaioō does not really mean “to declare righteous” in any deep sense but rather “to declare a person to be a member of the covenant community.” The works Paul rejects (“works of the law”) are not works in general, the argument runs, but the Jewish boundary markers — circumcision, food laws, Sabbath. There is something to the historical observation. Paul was writing in a context where Jewish/Gentile relations in the church were a live question. But the reading flattens what Paul is doing in Romans 4 and Galatians 3 into ethnic sociology, and it has trouble making sense of why faith is opposed to works in general — not just to Jewish identity markers — throughout Paul’s argument. The Lutheran reading is older and, in my judgment, more attentive to what the verb is actually doing.
The third is the James 2:24 confusion. James writes, “You see that a person is justified by works and not by faith alone.” Paul writes, “For we consider that a person is declared righteous by faith apart from the works of the law.” They both use dikaioō. They appear to contradict each other.
They do not. They are answering different questions with the same verb. Paul is asking how a sinner stands before God; his answer is that dikaioō declares the sinner righteous on the basis of faith alone. James is asking how the church can tell that someone’s faith is real; his answer is that dikaioō — used in its vindication sense — proves faith genuine when works follow it. Paul is in the courtroom of God; James is in the parking lot of the congregation. Same verb, different courtrooms. Faith without works is dead (James), but works do not justify the sinner before God (Paul). Both are right.
The fourth is the therapeutic reduction: “Justification means God loves you exactly as you are.” This is true in a sense — God does love sinners as sinners; that is the gospel. But it shrinks dikaioō from a courtroom verdict into a feeling of acceptance, and the loss is enormous. A verdict is something you can stand on when your feelings disagree. An affirmation is only as durable as the affirming. Lutherans hand you a verdict.
So What
The entry on Hamartia names the problem. Charis, Pistis, and Dikaiosyne fill in the categories around the verb. Dikaioō is the verb that says what God does.
You are justified. Past tense. Verdict rendered. Christ’s righteousness reckoned to your account. No condition attached but faith, and faith itself is the gift God gives that receives the gift God gives.
This is what you confess on Sunday when you say the Creed: “I believe in the forgiveness of sins” — not the future possibility of forgiveness, conditional on sufficient holiness; the present reality of forgiveness, declared by God in Christ. This is what your absolution announces: “in the stead and by the command of my Lord Jesus Christ, I forgive you all your sins.” This is what the bread and the cup deliver into your mouth: “given and shed for you for the remission of sins.”
When you teach this — and you will, because if you teach Christian doctrine at all you will eventually teach this — the temptation will be to soften it. To explain that yes, of course we are justified by faith, but we still have to … and the sentence finishes itself with a thousand variations. Resist. The verb has no buts. The verdict has no asterisks. You are justified by faith for Christ’s sake, and the rest of the Christian life is figuring out what to do with people who have been so unconditionally received.