persons, and the two missions of the Word and Spirit. Christology Lonergan produced two textbooks in Christology. In 1956 he produced a supplemental volume De Constitutione Christi Ontologica et Psychica; the fourth and final edition of 1964 was presented in the Collected Works with an interleaf translation as The Ontological and Psychological Constitution of Christ (2002). Lonergan clarifies the metaphysical principles of Christ's constitution as one person in two distinct natures, and transposes that framework to address the consciousness of Christ as a single subject of two distinct conscious subjectivities. Beginning with an edition of 1960, Lonergan introduced his own textbook for his Christology course, De Verbo Incarnato. Subsequent editions were published in 1961 and in 1964. De Verbo Incarnato is divided into four parts. The first part is an interpretation of the divinity and humanity of Christ as presented in the New Testament (thesis 1). The second part recapitulates the formation of the dogmatic theological tradition of Christology up through the monothelite controversy in the seventh century (theses 2–5). The third part, which covers much the same material as The Constitution of Christ but in a somewhat different manner, formulates what Lonergan calls "theological conclusions" from the hypostatic union regarding the ontological constitution of Christ as one person in two natures (theses 6–9), and his psychological constitution as a single subject of two subjectivities (thesis 10). The fourth part concerns "what belongs to Christ" (de iis quae christi sunt), including his grace, knowledge, sinlessness, and freedom (theses 11–14). The fifth and final section regards the redemptive work of Christ, in three theses: redemption in the New Testament (thesis 15), the satisfaction given by Christ (thesis 16), and "Understanding the Mystery: The Law of the Cross," presenting Lonergan's synthetic understanding of Christ's work (thesis 17). He also produced a separate treatise on the Redemption, of uncertain date and never published. This treatise treats, in six chapters divided into 45 articles, good and evil, divine justice, the death and resurrection of Christ, the cross of Christ, the satisfaction given by Christ, and the work of Christ. Among Lonergan's more noteworthy contributions to Christology include his theory about the ontological and psychological constitution of Christ, his interpretation of Christ's human knowing, and his interpretation of Christ's redemptive work. Both De Verbo Incarnato and the supplement on Redemption are in preparation for the Collected Works. The plan is to present two volumes, The