'Foolishly' in the Bible

That which I speak, I speak it not after the Lord, but as it were foolishly, in this confidence of boasting.

I speak as concerning reproach, as though we had been weak. Howbeit whereinsoever any is bold, (I speak foolishly,) I am bold also.

Are they servants of Christ? (I am talking foolishly) I am more so; I have had more experience of hard work, of prisons, of blows more than measure, of death.

Let no man take your reward from you by consciously making little of himself and giving worship to angels; having his thoughts fixed on the things which he has seen, being foolishly lifted up in his natural mind,

And they get into the way of doing no work, going about from house to house; and not only doing no work, but talking foolishly, being over-interested in the business of others, saying things which they have no right to say.