One, Holy, Catholic, and Apostolic

This session presents the profound mystery of the Church’s unity and that she is one because of her divine source in the Trinity of Persons. The sole Church of Christ is that which our Savior, after his Resurrection, entrusted to Peter’s pastoral care, commissioning him and the other apostles to extend and rule it. The Church was constituted and organized as a society in the present world and subsists in the Catholic Church.