So every good tree beareth good fruits; but every bad tree in kind, produceth bad fruits.

A good tree cannot produce bad fruits, neither can a tree bad in kind produce good fruits.

Again, the kingdom of heaven is like to a net cast into the sea, and colleting fish of every kind:

which, when it was full, they drew to the beach, and sitting down, selected the good into baskets, but cast those of a bad kind away.

But this kind goeth not out but by prayer and fasting.