In 1 Corinthians 1:18, Paul introduces the cross as foolishness to the perishing, which v21 develops into God's choice to use that message to save.

In 1 Corinthians 1:24, Paul identifies Christ as God's wisdom for believers, directly contrasting the world's failure that made the cross seem foolish.

In 1 Corinthians 15:2, Paul says the preached message saves believers, the same 'foolishness of preaching' God uses to save in 1 Corinthians 1:21.

In Matthew 11:25, Jesus thanks the Father for hiding truth from the wise and revealing to babes, reflecting the divine wisdom that bypasses worldly wisdom.

In Luke 10:21, Jesus' identical thanksgiving parallels the hidden-from-wise, revealed-to-babes pattern that explains God's method.

In Romans 1:20-22, Paul describes how the world's wisdom led to foolishness and failure to know God, the problem God solved through the cross's foolishness.

In Romans 11:33, Paul exalts the depth of God's wisdom, which underlies the surprising choice of 'foolish' preaching to save.

1 Peter 1:25 affirms the preached word of the Lord endures forever — the very means by which God saves in 1 Cor 1:21.

In Psalm 94:11, human thoughts are futile—this directly supports Paul's point that the world's wisdom cannot know God.

1 Thessalonians 4:5 describes Gentiles as 'those who do not know God' — the same ignorance Paul says the world had.

Ephesians 4:18 elaborates on the world's ignorance — darkened understanding and alienation — revealing why they did not know God.

In 2 Corinthians 11:6, Paul admits being unskilled in speech but not in knowledge, aligning with God using foolish preaching to save.

In 2 Corinthians 10:10, opponents deride Paul's speech as contemptible, reflecting the world's dismissal of the 'foolish' preaching highlighted in 1 Corinthians 1:21.

In Acts 17:23, Paul uses the altar to an unknown god to show the world's ignorance of God, which 1 Corinthians 1:21 says worldly wisdom cannot overcome.

In Acts 17:18, philosophers dismiss Paul as a babbler, illustrating the world's wisdom mocking the foolishness of the gospel.

In John 17:25, Jesus says the world has not known God, directly matching the premise that worldly wisdom fails to know God.

In Romans 1:28, rejection of God's knowledge results in a debased mind, illustrating the consequence of the world's failed wisdom.

In Galatians 4:8, Paul reminds believers they once did not know God, the same ignorance of God that 1 Corinthians 1:21 traces to worldly wisdom.

In Ephesians 3:10, God's manifold wisdom is revealed through the church, the result of the preaching that seems foolish to the world.

In Daniel 2:20, God's wisdom and power are praised as the source, contrasting with the world's failed wisdom that couldn't know God.