'Speech' in the Bible

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

And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power:

But I will come to you shortly, if the Lord will, and will know, not the speech of them which are puffed up, but the power.