Bible Verses About Ministers: Not with enticing words of man's wisdom

For Christ sent me not to baptize, but to preach the gospel: not in wisdom of words, lest the cross of Christ should be made void.

And I, brethren, when I came unto you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God.

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