carried out in vain. What was Paul’s remedy to this potential danger? He taught theology. He sought to equip the churches he planted not just to understand the depths of the gospel but also to know it in such a way that they could apply it to their contexts and teach it to others. Paul’s letters to Timothy and Titus emphasize the importance of doctrine (1 Tim 1:3, 10; 4:6; 6:3). For Paul, doctrine is more than mere head knowledge. For this reason, he speaks of Timothy’s faith dwelling in him (2 Tim