1 Corinthians 3:5–23 — Whose Church Is It?

What We Do for Christ Matters Eternally

In 1 Corinthians 2:6–3:4, Paul confronted the Corinthians with an uncomfortable truth: although they considered themselves spiritual, their jealousy, strife, and divisions showed that they were carnal, living in the flesh instead of being guided by the Spirit. In 1 Corinthians 3:5–23, the apostle Paul now shows them what spiritual maturity should look like in the way they think about ministry, service, and the church.

One of the great encouragements of this passage is that what we do for Christ matters eternally. Much of Christian service happens where very few people see it. Someone teaches children, cleans a room, encourages a discouraged believer, gives quietly, sets up chairs, shares the gospel, prays faithfully, or serves week after week without recognition. The world may consider those things insignificant, but God does not.

Paul reminds us that we are servants. We may plant and water, but God gives the increase. That means we do not need to carry the pressure of producing results, nor should we seek to receive the credit when God produces them. Our responsibility is simply to be faithful with what He has given us to do.

But Paul also tells us to “take heed how [we] build.” One day our work will be tested, and what was genuinely built on Christ, for Christ, by the Holy Spirit will endure. That gives eternal significance even to the smallest act of faithful service.
And all of this matters because the church does not belong to us. It belongs to God. We should therefore serve it faithfully, protect its unity, and build carefully upon the only true foundation—the Lord Jesus Christ.

So ... serve faithfully, build carefully, and remember whose church this is.