Paul throws out a rhetorical question that's impossible to answer: what could a holy God possibly have in common with lifeless idols? This isn't just about ancient temples; it's about our lives.
The Absolute Contrast
Paul uses the imagery of the Temple in Jerusalem – a place set apart for God's exclusive presence – and contrasts it with pagan idols. Idols represent lifeless, powerless, and often morally corrupt deities. There can be no 'middle ground' or compromise between the Creator and His creation, especially when that creation is turned into something it's not meant to be (an idol).
What's at Stake?
This isn't a minor point for Paul. He's building a case for believers to separate themselves from sinful practices common in the Corinthian culture. Associating with the 'temple of God' (believers) means separating from the 'temple of idols' (sinful world systems).
The Core Idea
God demands our exclusive devotion. Any attempt to mix His holy presence with the things that defile or oppose Him is an unthinkable, impossible 'agreement'.