1 Corinthians 2:1-5

When I came to you, brothers and sisters, I did not come with superior eloquence or wisdom as I proclaimed the testimony of God. For I decided to be concerned about nothing among you except Jesus Christ, and him crucified. And I was with you in weakness and in fear and with much trembling. My conversation and my preaching were not with persuasive words of wisdom, but with a demonstration of the Spirit and of power, so that your faith would not be based on human wisdom but on the power of God.