galatians5v22-23In the "Biblical Perspective" notes on this verse, Dr. Marsh Jones writes:

The apostle used a metaphor to explain the behavior of a Christian. The fruit that a tree bears obviously depends on the kind of tree. Likewise, the fruit that a person bears in his life depends on whether he has availed himself of salvation through faith. Christians will bear fruit.

From "Flesh vs. Spirit", Galatians and Ephesians, Adult Teacher's Insights, p. 31.