They say I'm a fool
They say I'm nothing
But if I'm a fool for you
Oh that's something
For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God. 1 Corinthians 1:18 NIV

The person without the Spirit does not accept the things that come from the Spirit of God but considers them ​foolishness, and cannot understand them because they are discerned only through the Spirit. 1 Corinthians 2:14 NIV

Do not deceive yourselves. If any of you think you are wise by the standards of this age, you should become "fools" so that you may become wise. 1 Corinthians 3:18 NIV

We are thought of as fools because of Christ...  We speak kind words to those who speak against us. When people hurt us, we say nothing. When people say bad things about us, we answer with kind words. People think of us as dirt that is worth nothing and as the worst thing on earth to this day. 1 Corinthians 4:10-13 NLV