Luke 6:43-45

43“For a good tree does not bear bad fruit, nor does a bad tree bear good fruit.

44For every tree is known by its own fruit. For men do not gather figs from thorns, nor do they gather grapes from a bramble bush.

45A good man out of the good treasure of his heart brings forth good; and an evil man out of the evil treasure of his heart brings forth evil. For out of the abundance of the heart his mouth speaks.