Thematic Bible: Tree and its fruit

For there is no beautiful tree producing corrupt fruit, nor corrupt tree producing beautiful fruit. For every tree is known by its own fruit: for they do not gather figs from thorns, nor do they gather the grape-bunch from the bramble. The good man out of the good treasure of his heart brings forth the good; and the wicked man out of the wicked treasure of his heart brings forth that which is wicked: for out of the abundance of his heart his mouth speaks.