Proverbs 15:28

"But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear:"

"Be not rash with thy mouth, and let not thine heart be hasty to utter any thing before God: for God is in heaven, and thou upon earth: therefore let thy words be few."

"A fool uttereth all his mind: but a wise man keepeth it in till afterwards."

"The heart of the wise teacheth his mouth, and addeth learning to his lips."

"The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness."

"Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: wherefore should God be angry at thy voice, and destroy the work of thine hands?"

"Seest thou a man that is hasty in his words? there is more hope of a fool than of him."

"In the multitude of words there wanteth not sin: but he that refraineth his lips is wise."