A sustained philosophical and theological defense of Christian belief against a hostile critic, addressing charges that Christian practices are secretive or unlawful, that Judaism is a crude source, that miracles are demonic, and that prophecy, resurrection, and the incarnation are irrational or borrowed. It combines close scriptural exegesis, moral argument, allegorical interpretation, and engagement with Greco-Roman philosophy to clarify doctrines of God, revelation, and salvation, to distinguish different dispensations, to rebut appeals to pagan oracles, and to argue that faith and reason are compatible in guiding ethical life.