"You must either make the tree healthy and its fruits healthy or make the tree sickly and its fruits sickly, for a tree is judged by its fruit.

So any healthy tree bears good fruit and a sickly tree bears poor fruit.

A healthy tree cannot bear poor fruit, and a sickly tree cannot bear good fruit.

Now the axe is already lying at the roots of the trees. Every tree then that fails to bear good fruit is to be cut down and thrown into the fire.

Any tree that does not bear good fruit is cut down and burned up.