1 Corinthians 2:4-5

And my language and my message were not set forth in persuasive (enticing and plausible) words of wisdom, but they were in demonstration of the [Holy] Spirit and power [a proof by the Spirit and power of God, operating on me and stirring in the minds of my hearers the most holy emotions and thus persuading them], So that your faith might not rest in the wisdom of men (human philosophy), but in the power of God.