'Speech' in the Bible

And I, brethren, when I came unto you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God.

And my speech and my preaching were not in persuasive words of wisdom, but in demonstration of the Spirit and of power:

So also ye, unless ye utter by the tongue speech easy to understood, how shall it be known what is spoken? for ye will be speaking into the air.