Thematic Bible: Tree and its fruit

"For there is no good tree that bears corrupt fruit; nor again a corrupt tree that bears good fruit; for each tree is known by its own fruit; for they do not gather figs of thorns, nor do they gather grapes from a bramble bush. "The good man out of the good treasure of his heart brings forth that which is good; and the evil, out of the evil treasure brings forth that which is evil; for out of the abundance of the heart does his mouth speak.