1 Corinthians 1:18 in the World English Bible
For the word of the cross is foolishness to those who are dying, but to us who are being saved it is the power of God.
Context
17 For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect.
18 For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.
19 For it is written, I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent.