Luke 6:44–45

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 grapesa. 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.