For a good tree does not produce unsound fruit; nor does an unsound tree produce good fruit.

And now also the ax is lying at the root of the trees; therefore, every tree that does not produce good fruit, is cut down and cast into the fire.

And he spoke a parable to them: See the fig-tree, and all the trees;

For every tree is known by its own fruit. For figs are not gathered from thorns, nor are grapes gathered from brambles.