1 Corinthians 2:1
And I, when I came to you, brothers, x did not come proclaiming to you y the testimony of God with lofty speech or wisdom.
English Standard Version (ESV) The Holy Bible, English Standard Version Copyright © 2001 by Crossway Bibles, a division of Good News Publishers.
1 Corinthians 2:4
And my speech and my message were not in plausible words of wisdom, but in demonstration of the Spirit and of power.
1 Corinthians 2:13
And we impart this in words not taught by human wisdom but taught by the Spirit, interpreting spiritual truths to those who are spiritual.
2 Corinthians 1:12
For our boast is this, the testimony of our conscience, that we behaved in the world with simplicity and godly sincerity, not by earthly wisdom but by the grace of God, and supremely so toward you.
1 Corinthians 1:17
For Christ did not send me to baptize but to preach the gospel, and not with words of eloquent wisdom, lest the cross of Christ be emptied of its power.
Now to him who is able to strengthen you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery that was kept secret for long ages