'Void Of Understanding' in the Bible

For we presume not to number, or compare ourselves with some who recommend themselves: but they measuring themselves by themselves, and comparing themselves with themselves, are void of understanding.

For though I should choose to boast, I would not be void of understanding: for I will speak the truth. But I forbear, lest any one should think of me more than what he sees me to be, or what he hears of me.