Shared ground
Paul opens a new topic about “spiritual things” and signals that the church’s understanding is incomplete (explicit). He frames the issue with their past: they once were drawn along toward idols that were “mute,” meaning they could not speak (explicit). That contrast matters because the problem in view involves speech that claims spiritual origin (inference from v.2–3).
Paul then provides a baseline test for evaluating Spirit-related speech in the community: speech “by God’s Spirit” will not produce “Jesus is accursed,” and the confession “Jesus is Lord” is not possible in the intended sense apart from the Holy Spirit (explicit). The passage therefore ties the Spirit’s work to speech that honors Jesus and rejects speech that treats him as cursed (explicit).
Where interpretation differs
One question is what “spiritual things” refers to (v.1). Some read it narrowly as “spiritual gifts” (especially speech-gifts) because chapters 12–14 focus heavily on gifts and public speech. Others read it more broadly as “spiritual matters/people/things,” with gifts included but not limited to them.
Another question is what “No one can say, ‘Jesus is Lord,’ except by the Holy Spirit” means (v.3). Some take it as a statement about genuine confession: the Spirit enables a true, heartfelt acknowledgment of Jesus’ lordship, not merely the ability to form the words. Others hear a stronger claim about ability more generally: apart from the Spirit, a person cannot truly make that confession at all, even if they can repeat the phrase.
A further question is how the “test” functions. Some treat Paul’s statements as strict rules for sorting true vs. false spiritual speech in every case. Others treat them as a boundary marker aimed at a specific problem in Corinth (speech in worship that was disrupting or contradicting the gospel), not a complete diagnostic for every spiritual claim.
Why the disagreement exists
The Greek behind “spiritual things” can point to multiple related ideas (gifts, matters, or persons characterized by the Spirit), and Paul does not define it here. Also, “say” can mean either producing words or making a meaningful confession. Finally, Paul’s “therefore” links the test to their idol-background, but he does not spell out the exact scenario he is correcting, leaving room for different reconstructions.
What this passage clearly contributes
Paul insists that not every intense or impressive “spiritual” experience is reliable; their past shows how people can be “carried along” toward what is spiritually empty (explicit). He anchors evaluation of Spirit-related speech to its stance toward Jesus: the Spirit will not lead people to curse Jesus, and acknowledging Jesus as Lord depends on the Spirit’s work (explicit). This sets a Christ-centered boundary for the rest of the discussion of gifts and speech in 1 Corinthians 12:4 and following (inference from the literary flow).