Course of Theology - Volume X - João Poinsot

This tenth volume of John of St. Thomas’s Course of Theology brings his systematic Thomistic synthesis into its sacramental completion, focusing on the means by which grace is restored and strengthened in the Christian life, in continuity with Thomas Aquinas.

The work begins with the theology of the sacraments in general, treating them as efficacious signs instituted by Christ that confer grace ex opere operato. John of St. Thomas explains their essential structure—matter, form, and minister—and the metaphysical conditions required for validity.

A substantial portion is devoted to the sacraments in particular, especially Baptism, Confirmation, Eucharist, Penance, Holy Orders, and Matrimony. He examines their individual effects, theological meaning, and place within the economy of salvation.

Special attention is given to the Eucharist as the center of sacramental life, analyzing the real presence of Christ, transubstantiation, and the sacrificial character of the Mass. Poinsot carefully integrates metaphysical distinctions to clarify how Christ is present without division or multiplication.

The volume also treats penance as the sacrament of spiritual restoration, explaining contrition, confession, and satisfaction as integral parts of reconciliation with God.

Throughout, John of St. Thomas maintains rigorous scholastic precision, presenting the sacraments as the divinely instituted instruments through which Christ continues to communicate grace and sanctify the Church.