“So glorify God in your body” (v20). Some Corinthian believers were committing sexual sin and justifying it by the local philosophy: “All things are lawful for me.” Paul said that something being legal wasn’t the point; the point is that our bodies are temples of God’s Spirit, and sexual immorality is not “helpful” but instead destructive. “The body is not meant for sexual immorality, but for the Lord” (v13). We are united with Christ, and so we should not use our bodies in ways that dishonor Him (v15).
“You are not your own, for you were bought with a price” (v20). Our bodies belong to Christ, who gave Himself on the cross so that we could be forgiven and redeemed.