Paul is engaging with a hypothetical argument that some might present: if human sinfulness serves to highlight God's righteousness, does that mean God is unjust when He punishes sin? By framing it as a human argument, Paul acknowledges the limitations of human reasoning in understanding divine justice. He is not suggesting that God is unjust; rather, he is using this argument to demonstrate the consistency and fairness of God's judgment.
The passage challenges believers to reflect on the nature of sin and righteousness. It underscores that while human wrongdoing may inadvertently reveal God's purity and justice, it does not excuse or justify sin. God's wrath against sin is a necessary aspect of His righteous character. This teaching encourages Christians to trust in God's perfect justice and to seek a deeper understanding of His ways, which are always aligned with His holy nature. It reassures believers that God's judgments are not arbitrary but are rooted in His unwavering righteousness.