The Corinthians were associating themselves with remarkable and skillful church leaders, perhaps in order to feel superior to other believers. By contrast, Paul reminds the Corinthians that even the greatest leader is only a servant of the Lord Jesus, and human labor is fruitful only because God “gives the growth” (1 Corinthians 3.5-7). Because our gifts and service are given “according to the grace of God” (verse 10), we cannot take credit for the work accomplished through us. God gives the grace, so God gets the glory.
From: Daily Devotional New Testament: Through the New Testament in a Year (Wheaton: Crossway, 2014), pp. 106-107.