Every tree that brings not forth good fruit is hewn down, and cast into the fire.
All Commentaries on Matthew 7:19 Go To Matthew 7
Augustine of Hippo
AD 430
On this point, one must carefully avoid the error of those who think that they find in these two trees a reason for believing that there are two natures and that one of them belongs to the nature of God but that the other neither belongs to God nor depends on him. This error has been rather fully discussed in other books, and if that is not sufficient it will receive still further treatment later. But we must now show that these two trees furnish no argument in support of it. First of all, in this similitude the Lord is speaking about two kinds of persons. This is so obvious that if anyone will but read the passages in the context of those that precede and follow it, he will be amazed at the blindness of those who would misinterpret it impersonally. Again, they fix their attention on the saying, “A good tree cannot bear bad fruit, nor can a bad tree bear good fruit,” and then they think that an evil soul cannot be changed into a better or a good soul into a worse. As though, in truth, the saying were “A good tree cannot become a bad tree, nor a bad tree become a good tree!” But what has been said is that “a good tree cannot bear bad fruit, and a bad tree cannot bear good fruit.” The tree, of course, is the soul itself—that is, the person—and the fruits are the person’s works. So a bad person cannot perform good works, nor can a good person perform bad works. .
