From D.A. Carson’s The Cross and Christian Ministry (p.35):
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!”
Thanking God for a pastor who is neither indolent in his study, nor careless in his pulpit; a pastor who faithfully reminds me of who I am in Christ every week, because I forget every week.