Luke 6:43-45

43For there is no good tree which produces corrupt fruit, nor a corrupt tree which produces good fruit;

44for every tree is known by its own fruit, for figs are not gathered from thorns, nor grapes vintaged from a bramble.

45The good man, out of the good treasure of his heart, brings forth good; and the wicked [man] out of the wicked, brings forth what is wicked: for out of the abundance of the heart his mouth speaks.