'Fool' in the Bible

Again I say, Let not any one think me to be a fool; but if otherwise, receive me then even as a fool, that I also may boast myself some little.

For if I shall desire to boast, I shall not be a fool; for I will say the truth; but I forbear, lest any one should think as to me above what he sees me to be, or whatever he may hear of me.

I have become a fool; ye have compelled me; for I ought to have been commended by you; for I have been nothing behind those who were in surpassing degree apostles, if also I am nothing.