In the very next verse (2 Tim 3:17), the training concept is developed further. By being ‘trained’ in righteousness, the man of God is made competent or proficient by the Scriptures, which equip him for every good work. It’s the ‘training’ in righteousness that leads to the proficiency, but the proficiency here is not a particular skill—such as being able to teach clearly, or lead a small group, or whatever—but a quality of character and behaviour based on the sound doctrine of the Scriptures.
