'Foolish' in the Bible

[This is] because the foolishness of God [is not foolishness at all and] is wiser than men [far beyond human comprehension], and the weakness of God is stronger than men [far beyond the limits of human effort].

But God has selected [for His purpose] the foolish things of the world to shame the wise [revealing their ignorance], and God has selected [for His purpose] the weak things of the world to shame the things which are strong [revealing their frailty].

Let no one deceive himself. If anyone among you thinks that he is wise in this age, let him become a fool [discarding his worldly pretensions and acknowledging his lack of wisdom], so that he may become [truly] wise.

You fool! Every time you plant seed you sow something that does not come to life [germinating, springing up and growing] unless it first dies.