 Similarly, accounts of theistic faith will be open to critique when they make assumptions about the mechanisms of revelation. In particular, the model of faith as assent to propositions as revealed holds that, since God’s grace is required for that assent, when grace is effective the whole ‘package deal’ of propositional revealed truth is accepted. This yields the notion of ‘the Faith’, as the body of theological truths to be accepted by ‘the faithful’, and it becomes a sign of resistance to divine grace to ‘pick and choose’ only some truths, as heretics do (Greek: hairesis, choice; see Summa Theologiae 2a2ae 5, 3 (Aquinas [2006], 157–61)). For heresy to be judged, however, some human authority must assume it possesses the full doctrinal revelation, with God’s grace operating without resistance in its own case. Whether that assumption can ever be sufficiently well founded to justify condemning and purging others is an important question, whose neglect may be seriously harmful, as we are reminded by the fact that the phrase for ‘act of faith’ in Portuguese—auto-da-fé—came to mean the public burning of a heretic.