Wisdom will be put to shame by this, and understanding will hide itself. It will be humbled, as though it had concealed itself. Wisdom will be shamed because all its methods will prove useless. Understanding will hide because it cannot discern anything in what I have done or how it has been done.
Such in general are the providential judgments of God, justified many times in the history of the Israelites. Saint Paul cites this passage not as a prophecy, but as a law of God's providential actions.
He seems to say: There is nothing astonishing in the Lord's being pleased to do this. Such is the law of God's Providence, that no one can comprehend the turns in His decrees.
No one can comprehend why He arranged our salvation through the Cross, and commanded that preaching concerning it be carried out not in wisdom of words.
Therefore there is no reason to force one's own wisdom into this matter. Nor should a man justify his unbelief by the fact that wisdom can understand nothing here, and count the manner of salvation offered by God as madness.
Throughout all history it has been so. What God arranged seemed to human wise men inconsistent with the course of events and not leading to the goal. In reality, it proved most fitting to the goal and thereby put human wisdom to shame.
So too with the word of the Cross. The wise men look at it and say: What kind of means of salvation is this? How can one save or be saved by this?
But in reality it proves to be the most effective means of salvation. Those who receive it with faith are saved, and they vividly feel its saving power.
The Lord destroyed the wisdom of the wise and rejected the understanding of the prudent. He thrust it away, so that it had only to flee and hide.