1 Corinthians 2:1-5

And when I came to you, brothers and sisters, I did not come as someone superior in speaking ability or wisdom, as I proclaimed to you the testimony of God.

For I determined to know nothing among you except Jesus Christ, and Him crucified.

I also was with you in weakness and fear, and in great trembling,

and my message and my preaching were not in persuasive words of wisdom, but in demonstration of the Spirit and of power,

so that your faith would not rest on the wisdom of mankind, but on the power of God.