1 Corinthians 1:18 NIV

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.

1 Corinthians 1:23-25 NIV
but we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles, but to those whom God has called, both Jews and Greeks, Christ the power of God and the wisdom of God. For the foolishness of God is wiser than human wisdom, and the weakness of God is stronger than human strength.

1 Corinthians 2:14 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.

2 Corinthians 4:3 NIV
And even if our gospel is veiled, it is veiled to those who are perishing.

2 Thessalonians 2:10 NIV
and all the ways that wickedness deceives those who are perishing. They perish because they refused to love the truth and so be saved.

Romans 1:16 NIV
For I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile.