Colossians 4:6 Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Proverbs 25:11-12 A word fitly spoken is like apples of gold in pictures of silver. As an earring of gold, and an ornament of fine gold, so is a wise reprover upon an obedient ear.
Ephesians 4:29 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.
Matthew 12:35,37 A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things. For by thy words thou shalt be justified, and by thy words thou shalt be condemned.