For 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.
Can the fig tree, my brothers, bear olive berries; or a vine, figs? So no fountain can yield both salt water and fresh.
Either make the tree good and its fruit good, or else make the tree corrupt and its fruit corrupt; for the tree is known by its fruit.
These are sunken rocks in your love feasts, feasting together with you; feeding themselves without fear; waterless clouds being carried about by winds; fruitless autumn trees, having died twice, having been plucked up by the roots;
You shall know them by their fruits. Do men gather grapes from thorns, or figs from thistles?
Therefore by their fruits you shall know them.