Maturing (1–4). We never outgrow the nourishing milk of the Word (1 Pet. 2:2), but we cannot grow strong unless we also have the “solid food” (Heb. 5:12–14; Matt. 4:4). You grow by eating and exercising (1 Tim. 4:6–8), and it takes both. Age is no guarantee of spiritual maturity.
Harvesting (5–9). Everybody has a place in the Lord’s harvest, and all are doing His work (John 4:34–38). There must be no competing or comparing, for the Lord alone recognizes the work and gives the reward. It makes no difference who the servant is so long as Jesus Christ is Lord of the harvest.
Building (10–17). Paul writes about the local church and the materials we put into it as we minister (Prov. 2:1–5; 3:13–15). Substituting man’s wisdom for God’s Word means building with perishable materials that will burn up at the judgment seat of Christ.
Glorifying God (18–23). Because the Corinthian believers gloried in human teachers (1:12) and human wisdom, they robbed God of the glory that rightly belonged to Him. “Let no one boast in men” is a command, not a suggestion.
“If you lack knowledge, go to school. If you lack wisdom, get on your knees! Knowledge is not wisdom. Wisdom is the proper use of knowledge.”