Filthy rags: our righteousness and the righteousness of Christ
Some phrases in the Bible hit hard. One of them is found in the book of the prophet Isaiah, where the people confess before God that even their best works are like filthy rags. It is a raw, uncomfortable, almost scandalous image. How can our good deeds be like dirty rags? Are our efforts to be good worth nothing? What did the prophet mean?
This verse, far from being a message of contempt, opens the door to one of the most liberating truths of the Gospel: we are not saved by our own righteousness, but by the righteousness of Jesus Christ, which God gives us freely through faith. In this article we study the context of the passage, its meaning and its application to the Christian life.
“But we are all as an unclean thing, and all our righteousnesses are as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.”
Isaiah 64:6
The context: a prayer from the ruins
Chapters 63 and 64 of Isaiah contain an intense prayer of God’s people in a time of desolation. The text describes holy cities turned into wilderness, Jerusalem in ruins and the temple burned (Isaiah 64:10-11). The people acknowledge that they have turned away from God, that they have sinned and that they have suffered the consequences.
In the midst of that pain they cry out: “Oh that thou wouldest rend the heavens, that thou wouldest come down” (Isaiah 64:1). It is the cry of those who know they cannot save themselves and need God to intervene. In that setting comes the confession: we are all as an unclean thing, all our righteousnesses are as filthy rags, we all fade as a leaf and our iniquities, like the wind, have taken us away.
This is not the opinion of a pessimistic prophet, but a humble, collective confession. The people do not say “they”, but “we”. They acknowledge their condition before a holy God.
What does “filthy rags” mean?
The Hebrew expression refers to a stained garment, unclean according to Israel’s purity laws, something no one would want to present before God in the temple. The image is deliberately strong: it seeks to make us grasp the distance between God’s perfect holiness and our human condition.
The text says “our righteousnesses”, that is, not only our obvious sins but also our good works, our religiosity, our sacrifices and our merits. When those works are presented as currency to buy God’s favour or as grounds for pride, they are stained. Even our best actions are mixed with imperfect motives: desire for recognition, calculation, pride or selfishness.
Why our works cannot save us
The Bible teaches in many ways that no one can attain salvation by their own merits. Paul quotes the Psalms to affirm that “there is none righteous, no, not one” (Romans 3:10). God’s law reveals his holiness, but it also shows our inability to keep it perfectly. James says that whoever keeps the whole law and yet offends in one point is guilty of all (James 2:10).
Jesus told the parable of the Pharisee and the tax collector. The Pharisee presented his list of good works before God: he fasted twice a week and gave tithes of all he possessed. The tax collector, by contrast, smote his breast and said: “God be merciful to me a sinner.” Jesus stated that the latter went home justified. The Pharisee trusted in his own righteousness, which before God was like a filthy rag; the tax collector trusted in divine mercy.
Paul’s testimony
Few people had a religious record as impressive as Saul of Tarsus. Circumcised on the eighth day, of the stock of Israel, a Pharisee, zealous for the law, blameless touching the righteousness which is in the law. Yet after coming to know Christ, he wrote:
“Yea doubtless, and I count all things but loss for the excellency of the knowledge of Christ Jesus my Lord: for whom I have suffered the loss of all things, and do count them but dung, that I may win Christ, And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith.”
Philippians 3:8-9
Paul uses a very strong word to describe his former righteousness: dung, refuse. It is the same idea as Isaiah’s. It is not that the law was bad, but that trusting in his own law-keeping as the way of salvation was useless. What he truly needed was the righteousness that comes from God through faith in Christ.
The good news: clothed in the righteousness of Christ
If Isaiah’s verse ended there, it would be hopeless news. But the Bible does not leave us in dirty rags. The same book of Isaiah announces: “I will greatly rejoice in the Lord, my soul shall be joyful in my God; for he hath clothed me with the garments of salvation, he hath covered me with the robe of righteousness” (Isaiah 61:10).
This is the great work of the Gospel: God takes away our stained clothes and dresses us in the righteousness of his Son. Paul explains it this way: “For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him” (2 Corinthians 5:21). Jesus Christ lived a perfect life, fulfilled all righteousness and died bearing our sin. When we believe in him, his righteousness is credited to us as a gift.
An image from Zechariah
The prophet Zechariah had a vision that illustrates this truth beautifully. He saw Joshua the high priest standing before the angel of the Lord, clothed in filthy garments, while Satan accused him. Then the Lord commanded: “Take away the filthy garments from him”, and said to him: “Behold, I have caused thine iniquity to pass from thee, and I will clothe thee with change of raiment” (Zechariah 3:3-4).
Joshua did not clean himself or change his clothes by his own effort. It was God who took away the filth and clothed him anew. That is grace: it does not ask us to clean ourselves up before coming; it receives us as we are and transforms us.
The parable of the wedding feast
Jesus told the parable of a king who made a marriage feast for his son and invited everyone, good and bad. But one guest came in without a wedding garment and was thrown out (Matthew 22:11-13). In the culture of the time, it is thought that the host could provide suitable clothing. The lesson is clear: we cannot present ourselves before God in our own clothes; we need the garment he provides, the righteousness of Christ.
So do good works not matter?
Some wrongly conclude that if our works do not save, it does not matter how we live. The Bible rejects this conclusion. Immediately after stating that we are saved by grace through faith and not of works, Paul adds: “For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them” (Ephesians 2:10).
The difference lies in the place works occupy. They are not the root of salvation but its fruit. We do not do them in order to be accepted by God, but because we have already been accepted. Works done as an attempt to earn heaven are filthy rags; works done out of gratitude, in the power of the Spirit, are pleasing to God. Jesus said our light should shine before men, that they may see our good works and glorify our Father.
Revelation describes the bride of the Lamb clothed in fine linen, clean and white, and explains that the fine linen is the righteousness of saints (Revelation 19:8). Even those deeds are a gift: it was granted to her to be so clothed. Everything is by grace.
Set free from pride and guilt
This truth frees us from two opposite burdens. On the one hand, from spiritual pride, which makes us feel superior to others because of our religious works. If our best works are filthy rags without Christ, no one can boast. On the other hand, it frees us from guilt and despair. If our acceptance before God depended on our performance, we would always live insecure. But in Christ we have a perfect righteousness that does not change with our good or bad days.
A truth that unites the Church
Salvation by grace is a truth many Christian traditions confess together. In 1999 the Catholic Church and the Lutheran World Federation signed the Joint Declaration on the Doctrine of Justification, recognising together that we are accepted by God not because of our merits, but by grace alone and through faith in Christ’s saving work. Other Christian families later joined it. It is a beautiful example of how the Word can bring believers closer together.
How to apply this truth
Confess humbly: acknowledge before God that you cannot save yourself. Receive the righteousness of Christ: trust in his work, not in your merits. Rest in grace: when you feel unworthy, remember that you are clothed in Christ. Live gratefully: do good works as a response of love, not as payment. Treat others with mercy: if God clothed you in grace, don’t look down on others.
Prayer
Holy God, I acknowledge that even my best works are stained before you and that I cannot save myself. Thank you that in Jesus Christ you take away my filthy rags and clothe me with the robe of his righteousness. I receive this gift by faith. Free me from pride and guilt. May my works be the fruit of gratitude and give you glory. In the name of Jesus, my righteousness, amen.