Luke 6:43-45King James Version (KJV)
43 For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit.
44 For every tree is known by his own fruit. For of thorns men do not gather figs, nor of a bramble bush gather they grapes.
45 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.