'Boastings' in the Bible

Should thy boastings make men hold their peace? And when thou mockest, shall no man make thee ashamed?

We have heard of the pride of Moab, that he is very proud; even of his arrogancy, and his pride, and his wrath; his boastings are nought.

I know his wrath, saith Jehovah, that it is nought; his boastings have wrought nothing.

But now ye rejoice in your boastings: all such rejoicing is evil.