If I partake with thankfulness, why am I to be evil spoken of in a matter for which I give thanks?

But now, brethren, if I come to you speaking with tongues, what shall I profit you, unless I speak to you either by revelation, or by knowledge, or by prophesying, or by teaching?

So also ye, unless ye utter by the tongue words easy to be understood, how shall that be known which is spoken? For ye will be speaking into the air.