Romans 1:23 Commentary: Exchanging God's Glory for Idols

Paul wrote Romans from Corinth, a city filled with idols, to a church in Rome where Greco-Roman and Egyptian cults mingled. The verse reflects both worlds. First, the worship of gods in human form, “corruptible man”, was characteristic of Greek religion. Jamieson-Fausset-Brown suggests Paul may have had in mind the “exquisite chisellings of the human form” he saw on Mars’ Hill (Acts 17:29). Then the descent to birds, four-footed beasts, and creeping things matches Egyptian worship: the ibis, hawk, ox, crocodile, and scarab beetle (Clarke). This progression is not random. The Old Testament had forbidden making images of anything in heaven, earth, or water (Deuteronomy 5:8; 4:15-18). Psalm 106:20 laments Israel’s exchange of God’s glory for “an image of a bull that eats grass.” Paul universalizes the pattern: all humanity, having known God from creation (vv 19-20), chose to suppress that truth and descend step by step from the Creator to His lowliest creatures. Poole notes the apostle proceeds “from the more worthy to the less worthy creatures, that the grossness of their idolatry might the better appear.”

The preposition ἐν (in/to) with the dative “likeness” suggests they transformed God’s glory into a representation, a self-made image that could never capture His majesty. Calvin insists they could not excuse themselves by claiming the image was only a symbol: “It is a high indignity to God, to form so gross an idea of his majesty as to dare to make an image of him.” The physical descent in worship correlates with a moral descent. Hence, this verse is not a simple description of ancient religion but a diagnosis of the human heart: when people reject the true God, they create substitutes that pull them downward, and the created order becomes a prison rather than a path to the Creator.

The consulted sources note no significant textual variants for this verse. The Greek text is well-established, with minor differences in word order among manuscripts but no substantive changes to meaning.

Early Christian apologists used this verse to argue against pagan worship. Calvin explicitly cites Lactantius, Eusebius, and Augustine's City of God as works that document the abominations Paul describes. During the Reformation, the verse was a key text for exposing the idolatry of any image in worship, reinforcing the principle that God cannot be represented by material forms. In modern times, the verse is often discussed in debates about the origin of religion: evangelical interpreters hold it as a description of the historical fall, while some critical scholars (following the approach of Reiche and Jowett) see it as an ancient Israelite polemic rather than universal history. Across traditions, the verse’s indictment of human rebellion remains central to Christian teaching on sin.

Three-point outline

1. The glory we traded. God revealed Himself through creation (vv 19-20), but humanity refused to honour Him. The exchange was not ignorance but a deliberate choice to turn from the incorruptible God to images.
2. The degrading path we chose. The progression from man to birds to beasts to creeping things is a descent: from the noblest creature to the lowliest. Each step shows the growing darkness of the heart that rejects the true God.
3. The judgment that follows. Paul immediately adds “Therefore God gave them up” (v24). Idolatry leaves humanity unprotected, and consequences follow naturally.

Five-point outline

1. Revelation received. God’s power and divinity are clear from creation (vv 19-20). No one has an excuse.
2. Refusal to respond. They did not glorify God as God or give thanks (v21). The heart grew vain and darkened.
3. Claim to wisdom. Professing to be wise, they became fools (v22). Self-deception is at the root of idolatry.
4. The fatal exchange. They traded the glory of the incorruptible God for the likeness of perishable creatures (v23). The verbs are aorist, a decisive moment.
5. The descent into judgment. God gave them over to lusts and uncleanness (v24). The penalty is built into the sin itself.

Illustration hooks

• A child who refuses a healthy meal fills up on sweets, then on anything that offers a sugar rush. Each substitute is less nourishing. In the same way, rejecting God leads to ever poorer substitutes.
• In a culture of constant upgrades, we often trade deep satisfaction for passing novelty. The new phone or relationship promises more but delivers less.
• A relationship where someone replaces genuine love with control or convenience will degrade over time. The pattern of exchange without repentance always moves downward.

Questions your congregation is asking

• “Why would educated people in the ancient world worship animals? That seems primitive.”
• “I don’t have a statue in my house. How does this verse apply to me?”
• “Is Paul saying that all non-Christian religions are equally false, or is he describing something that happened long ago?”

This verse sits at the heart of Paul’s indictment of humanity. Before you explore it, take a moment to picture the scene: a world full of beautiful statues, temples, and rituals, all substitutes for the living God. How did people get there? What does that say about the human heart?

Discussion questions

1. Observation: What exactly does Paul say was exchanged? What was traded for what? List the items on both sides of the exchange.
2. Observation: The creatures are listed in a specific order: man, birds, four-footed animals, creeping things. Why does their order matter?
3. Interpretation: What does “the glory of the incorruptible God” mean? How does it contrast with “the likeness of an image of corruptible man”?
4. Interpretation: Barnes and Calvin agree that Paul is not describing a change in God but in human perception and worship. How does that distinction shape your understanding of the verse?
5. Application: In what areas of your life might you be tempted to exchange God’s glory, His honour and majesty, for something lesser? Think beyond physical idols.
6. Application: The progression in the verse suggests that one wrong exchange leads to another. Have you seen this pattern in your own life or in your community? Share carefully.
7. Wider context: How does this verse prepare us for Paul’s statement that “God gave them up” in verse 24? What does it teach about the consequences of rejecting God?