Wise or Foolish? Romans 1:22 There are those who think they know more than other people - even more than God. They reject the light of the knowledge of that which can be seen by all men and claim they have superior intelligence - they claim to be wise. Those who are truly wise don't make such claims; in fact, they are usually humble people, but they can make sound judgments characterized by deep understanding. Such wisdom is not something based on a "spur-of-the-moment" decision but an enduring knowledge that has been formed over the passing of time.
A fool by contrast, is one who lacks good sense and makes decisions apart from good judgment. They have told others they are wise because they have studied the words of a few writers rather than those of over 40 writers writing over a period of 1500 years whose words correspond with the facts we can see all around. Also, millions of people have tried and proven those teachings over generations. More than that, holy men were moved by the Holy Spirit to put the holy scriptures into a Holy Book for us all to read.
People make silly "reasonings" to avoid ever meeting God and being subject to Him. So, they put foolish words together that blind their own minds and those who follow their baseless teaching. We must take time to make sure that what we listen to corresponds with the truth of the Word of God. Until man knows what sin is and that he is guilty of sin, he will have no interest in God's grace. If the sense of guilt is not real enough, there will be no felt need for pardon, and there won't be true repentance. Without repentance toward God, no faith will be placed in our Lord Jesus Christ. Those who claim they are wise but avoid telling the truth about our sins and the righteousness of God are tools in the hands of the devil. They are not wise at all but have become fools.