A deep mastery trainer for Christology, built from the course page: the person of Christ (truly God, truly man, one person in two natures), the Chalcedonian Definition and the classical vocabulary, the patristic heresies, the states and the threefold office, the atonement (necessity, theories, penal substitution, extent), active and passive obedience and federal headship, Christ's continuing work, Christ in the Old Testament, the resurrection and virgin birth, the modern Quests and false Christologies, the major objections answered, and memory verses. Each mode trains a different skill; the final exam ranges over the whole course. Unlock each subtopic by scoring at least 90% on its mastery check. Confess what Scripture reveals; hold the mystery with humility.