'Speech' in the Bible

Seeing then that we have such hope, we use great plainness of speech:

Great is my boldness of speech toward you, great is my glorying of you: I am filled with comfort, I am exceeding joyful in all our tribulation.

For his letters, say they, are weighty and powerful; but his bodily presence is weak, and his speech contemptible.

But though I be rude in speech, yet not in knowledge; but we have been throughly made manifest among you in all things.