God showed that my message was true by the powerful things that he did, not because I spoke in a way that would make people think highly of me.

1 Corinthians 2:1-5

2 My fellow believers, when I came to you, I proclaimed to you the message that God had revealed to me. But I did not proclaim it using eloquent words that would make people think highly of me, nor did I argue in a way that unbelievers would think was very wise. 2 I did that because I decided that I would speak only about Jesus Christ. Specifically, I told you what he accomplished for us when he was killed by being nailed {when they killed him by nailing him} to a cross. 3 Furthermore, when I was with you, I felt that I was not adequate to do what Christ wanted me to do. I was afraid that I would not be able to do it, and because of that I was trembling very much. 4 When I taught you and preached to you, I did not speak words that unbelievers would consider [IRO] wise in order to convince them that my message was true. Instead, God’s Spirit showed that it was true by enabling me to powerfully perform miracles. 5  I taught and preached that way in order that you might believe my message, not because you heard words that people considered to be [IRO] wise, but because you recognized God’s power.