Paul introduces himself as an apostle of Christ Jesus by the will of God, along with his brother Sosthenes, and greets the church of God in Corinth, called to be holy together with all who call on the name of the Lord. He wishes them grace and peace. He then thanks God that in Christ they have been enriched in all speech and knowledge and lack no gift as they wait for the revealing of Jesus Christ. He affirms that God is faithful and will keep them to the end.
Paul then turns to the main problem. Some from Chloe's household have told him there are quarrels among them: some say they follow Paul, others Apollos, others Cephas and others Christ. Paul asks whether Christ is divided, whether Paul was crucified for them or whether they were baptized in his name. He is glad he baptized only Crispus, Gaius and the household of Stephanas, because Christ sent him not to baptize but to preach the gospel, without clever speech that would empty the cross of its power.
The message of the cross is foolishness to those who are perishing but the power of God to those who are being saved. God made the wisdom of the world foolish: Jews ask for signs and Greeks seek wisdom, but Paul preaches Christ crucified, a stumbling block to some and folly to others, yet to those who are called, the power and wisdom of God. Paul closes by reminding them that few of them were wise, powerful or noble. God chose what is weak and foolish to shame the strong, so that no one may boast before him, and whoever boasts should boast in the Lord.