1 Corinthians 2:2

As far as his preaching went, Paul only spoke about Christ crucified. This was his regular practice (Galatians 3:1). He left all other knowledge aside.

"According to Acts xviii. 1 Paul moved on to Corinth from Athens, and it is often supposed that after an attempt to marry the Gospel to Greek philosophy in his Areopagus speech (Acts xvii. 22-31), which was attended with indifferent success (Acts xvii. 32 ff.), he determined to change his tactics and preach nothing but the cross. [Note: E.g., Barclay, p. 26.] For this imaginative picture there is no evidence whatever." [Note: Barrett, p. 63.]

". . . 1 Corinthians is more than a practical letter aimed at telling the readers what to do and what not to do. The letter in fact primarily seeks to influence the minds, dispositions, intuitions of the audience in line with the message Paul had initially preached in the community (1 Corinthians 2:2), to confront readers with the critical nature of God’s saving action in the crucified Christ in such a fashion that it becomes the glasses to refocus their vision of God, their own community, and the future. The advancing of such an epistemology gives the letter a theological purpose that unifies its otherwise unconnected structure." [Note: Charles B. Cousar, "The Theological Task of 1 Corinthians," in Pauline Theology. Vol. II: 1 & 2 Corinthians, p. 102.]

Centering his preaching on Christ crucified was not a new tack Paul took in Corinth because of previous lack of response (cf. Acts 17:22-31).

"What Paul avoided was artificial communication that won plaudits for the speaker but distracted from the message. Lazy preachers have no right to appeal to 1 Corinthians 2:1-5 to justify indolence in the study and careless delivery in the pulpit. These verses do not prohibit diligent preparation, passion, clear articulation, and persuasive presentation. Rather, they warn against any method that leads people to say, ’What a marvelous preacher!’ rather than, ’What a marvelous Savior!’" [Note: Carson, p. 35.]