'Foolishness' in the Bible

For since the world through all its [earthly] wisdom failed to recognize God, God in His wisdom was well-pleased through the foolishness of the message preached [regarding salvation] to save those who believe [in Christ and welcome Him as Savior].

For the wisdom of this world is foolishness (absurdity, stupidity) before God; for it is written [in Scripture], “[He is] The one who catches the wise and clever in their craftiness;”