"Either make the tree good, and its fruit good, or make the tree corrupt, and its fruit corrupt; for the tree is known by its fruit.

Seeing a fig tree by the road, he came to it, and found nothing on it but leaves. He said to it, "Let there be no fruit from you forever!" Immediately the fig tree withered away.

Even so, every good tree produces good fruit; but the corrupt tree produces evil fruit.

A good tree can't produce evil fruit, neither can a corrupt tree produce good fruit.

"Even now the axe lies at the root of the trees. Therefore, every tree that doesn't bring forth good fruit is cut down, and cast into the fire.