Form of Sound Words
What is interesting is that Paul does not simply say, “Make sure you stay true to the conceptual content of what you have been taught.” Paul also highlights the form of the words used here... One of the things that teachers in any discipline do is to teach a special vocabulary to their students and instruct them on how to use that vocabulary correctly...each profession has its own special language, and learning the profession is in large part learning the language and how to use it. This facilitates communication between members of the specific profession and allows work to be done properly and efficiently. It also allows for the easy identification of an outsider, or somebody who does not have the requisite competence in the field.
Carl Trueman, The Creedal Imperative (Wheaton, IL: Crossway, 2012), 74