'Foolish' in the Bible

I wish you could have borne with a little foolish boasting on my part. Nay, do bear with me.

To return to what I was saying. Let no one suppose that I am foolish. Or if you must, at any rate make allowance for me as being foolish, in order that I, as well as they, may boast a little.

It is foolish of me to write all this, but you have compelled me to do so. Why, you ought to have been my vindicators; for in no respect have I been inferior to these superlatively great Apostles, even though in myself I am nothing.