How spiritual formation is not mere interiority or “authenticity” but death-and-resurrection at the hand of the living God.
Theologically-orthodox Christians, or folks interested in things that theologically-orthodox Christians think.
Webster opened his lectures by arguing for the essential character of Christian formation as an ingredient of right theological work. But he recognizes that this could be taken as an invitation to treat this formation as just another human act, and — worse — as an invitation to embrace a kind of self-oriented “authenticity”: that chief virtue of our age. And he will have none of that:
The work of Christian formation, and therefore also the work of theological formation, is the work of dying to self at the hand of the God who loves us enough to destroy our worship of self and the world around us — to free us by the Christ-shaped path of death and resurrection.
Put another way, as Webster gestures a few pages earlier: while Christian formation is indeed formation of virtue, it is (emphatically!) not an act of self-creation, not merely the outflow of a set of habits pursued with deep enough commitment and self-discipline. Indeed, that self-driven pursuit will just produce pride. Instead, true Christian formation (including true theological formation) comes through prayer: through humbly coming to the living God aware of our need and his sufficiency and pleading for him to work in us through his word, through the sacraments, and through his saints as we meet.