The only form of this word most of us still use naturally is self-righteous, and we use it as an insult. That tells you how far the word has drifted. Righteousness now sounds like a quality possessed by people who are pleased with themselves — moral tidiness, a clean record, a faintly smug expression. Nobody wants to be described this way, and hardly anybody aims at it.
Which is a problem, because Scripture uses the word constantly and treats it as the best news in the book.
A word about being rightly related
The Hebrew word behind it is tsedaqah, and it is worth knowing that English splits into two words what Hebrew holds together in one. When your Bible says righteousness and when it says justice, it is often translating the same family of words. Amos does not distinguish them:
But let justice roll on like a river, righteousness like a never-failing stream! (Amos 5:24, NIV)
We hear two ideas there — one public, one private. A Hebrew ear heard one idea said twice.
That single idea is relational. Tsedaqah describes being rightly related to the people and obligations you are bound to, and acting accordingly. A righteous person pays fair wages, tells the truth in court, leaves grain at the edges of the field for the poor. Righteousness is what faithfulness looks like when it moves. It is measured in the way you treat your neighbour, not in a private ledger of infractions avoided.
Applied to God, the word means something similar: God’s righteousness is his unwavering faithfulness to what he has promised. He does right by his covenant. He keeps his word to people who did not keep theirs.
Why this changes the news
Hold onto that, and read the sentence Paul plants at the head of Romans like a flag:
For in the gospel the righteousness of God is revealed — a righteousness that is by faith from first to last, just as it is written: “The righteous will live by faith.” (Rom. 1:17, NIV)
Martin Luther said this verse tormented him for years. He had been taught that the righteousness of God meant the standard by which God judges, the perfect measure that condemns everyone who falls short. Read that way, the sentence is terrifying: the gospel reveals the exact yardstick that will destroy you. Luther admitted he hated the phrase.
Then it broke open for him. The righteousness revealed in the gospel is the righteousness God gives, not the one he demands — his covenant faithfulness in action, rescuing people who had no standing of their own. The yardstick became a gift. Luther wrote that he felt himself reborn and walking through open gates.
The seed of it is much older than Paul. Long before the law was given, Abram is standing outside at night being told to count stars he cannot count, and the text says:
Abram believed the LORD, and he credited it to him as righteousness. (Gen. 15:6, NIV)
Credited. Reckoned to his account. Abram did nothing that morning except take God at his word, and the word for right standing was applied to him.
The exchange at the centre
Paul states the mechanism of this in one of the densest sentences he ever wrote:
God made him who had no sin to be sin for us, so that in him we might become the righteousness of God. (2 Cor. 5:21, NIV)
Two movements in one line. Christ takes what belongs to us. We receive what belongs to him. Righteousness stops being an achievement to be assembled and becomes a status conferred — a place to stand, given.
Paul says elsewhere that he wants to be found in Christ, not having a righteousness of my own that comes from the law, but that which is through faith (Phil. 3:9). He had the résumé. He describes throwing it out.
And once the status is settled, the old relational meaning comes back with force. Jesus tells people to hunger and thirst for righteousness (Matt. 5:6) — an appetite, not an accomplishment. What is credited to you is meant to start showing up in how you pay people and whether you tell the truth.
A way in
Try this for a week. Every time you meet righteousness in your reading, pause and substitute a longer phrase: God doing right by his promises, or being rightly related to God and neighbour. See what it does to the sentence. Romans and the Psalms both come alive under this.
The word has an edge that stays uncomfortable. Righteousness as gift is a relief; righteousness as justice at the edges of a field is a bill. Scripture never lets you take the first without the second, and I have no clean way to soften that.