I Corinthians 2:1-5
1 And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.

2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.

3 And I was with you in weakness, and in fear, and in much trembling.

4 And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power:

5 That your faith should not stand in the wisdom of men, but in the power of God.