Bible Verses About Slander: Comes from the Evil Heart

For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:

A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh.