1 Corinthians 1:17, 21
1 Corinthians 1:17 NIV
For Christ did not send me to baptize, but to preach the gospel—not with wisdom and eloquence, lest the cross of Christ be emptied of its power.
1 Corinthians 1:21 NIV
For since in the wisdom of God the world through its wisdom did not know him, God was pleased through the foolishness of what was preached to save those who believe.