Bible Verses About public speaking

And the LORD said unto him, Who hath made man's mouth? or who maketh the dumb, or deaf, or the seeing, or the blind? have not I the LORD?

Now therefore go, and I will be with thy mouth, and teach thee what thou shalt say.

Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.

Then the word of the LORD came unto me, saying,

Be not afraid of their faces: for I am with thee to deliver thee, saith the LORD.

And when they bring you unto the synagogues, and unto magistrates, and powers, take ye no thought how or what thing ye shall answer, or what ye shall say:

And this is the record of John, when the Jews sent priests and Levites from Jerusalem to ask him, Who art thou?

So likewise ye, except ye utter by the tongue words easy to be understood, how shall it be known what is spoken? for ye shall speak into the air.

Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.

And for me, that utterance may be given unto me, that I may open my mouth boldly, to make known the mystery of the gospel,

Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.