Paul wrote that he wasn't ashamed of the gospel because "in it the righteousness of God is revealed." He goes on to give 11 chapters of how the righteousness of God is revealed in the gospel. So ... I did a search and made a list ...
1. Righteous Wrath — Romans 1:18–32
God’s righteousness is first revealed in His wrath against human sin. His judgment is not arbitrary but morally necessary. The gospel shows that God is righteous because He does not ignore evil.
2. Impartial Judgment — Romans 2:1–16
God judges Jew and Gentile alike. His righteousness is displayed in His impartiality—He shows no favoritism, and His judgment accords with truth.
3. Faithfulness to His Covenant Promises — Romans 3:1–8
Israel’s unfaithfulness does not nullify God’s faithfulness. The gospel reveals God as righteous because He keeps His promises even when His people fail.
4. Universal Condemnation Leading to Universal Need — Romans 3:9–20
God’s righteousness is revealed in His truthful assessment of humanity: all are under sin. The gospel begins by leveling the ground—everyone needs the righteousness God gives.
5. Righteousness Apart from the Law — Romans 3:21–26
This is the theological center of Romans. God reveals His righteousness by providing a righteousness apart from the Law, grounded in Christ’s atoning death. God is righteous in justifying sinners because Christ’s blood satisfies justice.
6. Justification by Faith Alone — Romans 4
Abraham’s example shows that God’s righteousness is revealed in a salvation that rests on faith, not works. God justifies the ungodly in a way that upholds His justice and magnifies His grace.
7. Peace, Access, and Hope Through Christ — Romans 5:1–11
God’s righteousness is revealed in the blessings that flow from justification: peace with God, access to grace, and hope of glory. These gifts show His righteous generosity.
8. Christ as the Righteous Head of a New Humanity — Romans 5:12–21
Where Adam brought condemnation, Christ brings righteousness and life. God’s righteousness is revealed in His redemptive plan to create a new humanity in Christ.
9. Righteous Transformation, Not Merely Righteous Status — Romans 6
The gospel reveals God’s righteousness by producing actual holiness in His people. Those justified are also united to Christ in His death and resurrection, walking in newness of life.
10. Righteous Liberation from the Law’s Condemnation — Romans 7
God’s righteousness is revealed in freeing believers from the Law’s condemning power while honoring the Law’s goodness. The gospel does what the Law could not do.
11. The Righteous Life of the Spirit — Romans 8:1–17
The Spirit fulfills the Law’s righteous requirement in believers. God’s righteousness is revealed in giving His Spirit to empower obedience and assure adoption.
12. Righteous Assurance and Preservation — Romans 8:18–39
God’s righteousness is displayed in His unwavering commitment to bring His people to glory. Nothing can separate them from His love in Christ.
13. Righteous Sovereignty in Election — Romans 9
God’s righteousness is revealed in His sovereign freedom to show mercy. His choice of Isaac over Ishmael, Jacob over Esau, and His mercy toward sinners displays His righteous purposes.
14. Righteous Patience Toward Israel — Romans 10
God’s righteousness is revealed in His ongoing offer of salvation to Israel despite their unbelief. He remains faithful, patient, and merciful.
15. Righteous Preservation of a Remnant — Romans 11:1–10
God’s righteousness is shown in preserving a faithful remnant within Israel, demonstrating His ongoing covenant fidelity.
16. Righteous Inclusion of the Gentiles — Romans 11:11–24
God’s righteousness is revealed in grafting Gentiles into the covenant people. Their inclusion magnifies His mercy and fulfills His promises.
17. Righteous Restoration of Israel — Romans 11:25–32
God’s righteousness is revealed in His future plan to save “all Israel.” His mercy toward both Jews and Gentiles displays His righteous, covenant-keeping character.
18. Righteous Glory in God’s Final Purpose — Romans 11:33–36
Paul concludes with worship: God’s righteousness is revealed in the depth, wisdom, and perfection of His saving plan.
Probably just a partial list, but maybe you can begin to see what he meant. In fact, the last chapters (Romans 12-16) are also about God's righteousness on display—on display in each of us. It is how we live out the righteousness He credits us with. It is about how
we display His righteousness in our lives. And it's about how big the gospel becomes when viewed through the righteousness of the God who gave it to us.