A good tree cannot produce evil fruit, nor can a rotten tree produce good fruit.
Thus every good tree produces good fruit, but a rotten tree produces evil fruit.
Every tree not producing good fruit is cut down and cast into the fire.
"For a good tree does not produce rotten fruit, nor does a rotten tree produce good fruit.
For the flesh lusts against the Spirit, and the Spirit against the flesh; and these things oppose each other, so that you do not do the things that you wish.