Taking part in the meeting, at which His Holiness will be present, will be the Heads of the Oriental Catholic Churches; the Superiors of the Secretariat of State; the Prefects of the Congregations for the Doctrine of the Faith, for the Oriental Churches, for Bishops, for the Evangelization of Peoples, for the Clergy, for Institutes of Consecrated Life and for Societies of Apostolic Life, and of the Dicastery for Laity, the Family and Life; the Presidents of the Episcopal Conferences; and representatives of the Union of Superiors General and of the International Union of Superiors General.