'Witless' in the Bible

This is not the way to repay the LORD, is it, you foolish and witless people? Is he not your father, who bought you, formed you, and established you?

The princes of Zoan are complete fools;The counsel of the Pharaoh’s wisest advisors has become stupid.How can you say to Pharaoh,“I am a son of the wise, a son of ancient kings?”

When its branches are dry, they are broken off;The women come and make a fire with them.For they are not a people of understanding,Therefore He who made them will not have compassion on them,And He who created them will not be gracious to them.

I repeat then, let no one think that I am foolish; but even if you do, at least accept me as foolish, so that I too may boast a little.

To my shame, I must say, we have been too weak [in comparison to those pseudo-apostles who take advantage of you].But in whatever anyone else dares to boast—I am speaking foolishly—I also dare to boast.

If I wish to boast, I will not be foolish, because I will be speaking the truth. But I abstain [from it], so that no one will credit me with more than [is justified by what] he sees in me or hears from me.

Therefore see that you walk carefully [living life with honor, purpose, and courage; shunning those who tolerate and enable evil], not as the unwise, but as wise [sensible, intelligent, discerning people],