discover a counterfeit is to know the genuine article like the back of your hand. Sadly, false teachers will always gain a hearing because they say what we want to hear (2 Tim. 4:3–4). The best antidote to an appetite for false teaching is a steady diet of sound doctrine. The best way to prevent doctrinal disease is a regular regimen of the preventive medicine of scriptural theology. How then should sound doctrine influence how the