Original sentence: " The members of the institute may engage in a criticism of the Second Vatican Council that is serious and constructive and in accord with Pope Benedict XVI's address of 22 December 2005 to the Roman Curia, while recognizing that it is for the Apostolic See to give the authentic interpretation.For their part, each of the founding members personally undertook to respect the authentic Magisterium of the Apostolic See of Rome with "complete fidelity to the infallible Magisterium of the Church.The Holy See granted the members of the new institute exclusive use, as the institute's own rite, of the "Tridentine" form of the Roman Rite, employing the 1962 Roman Missal.The Institute of the Good Shepherd is a Roman Catholic society of apostolic life of priests who were members of the Society of Saint Pius X, but are now regularized and in full communion with the Holy See
Edited sentence: " The members of the institute may engage in a criticism of the Second Vatican Council (of its influence) that is serious and constructive and in accord with Pope Benedict XVI's address of 22nd of December, 2005, to the Roman Curia, while recognizing that it is for the Apostolic See to give the authentic interpretation of that Council.For their part, each of the founding members personally undertook to respect the authentic Magisterium of the Apostolic See of Rome with "complete fidelty to the infallible Magisterium of the Church.The Holy See granted the members of the new institute exclusive use, as the institute's own rite, of the earlier ("Tridentine") form of the Roman Rite (Missale Romanum 1962).The Institute of the Good Shepherd is a Roman Catholic society of apostolic life of priests who were members of the Society of Saint Pius X, but are now regularized and confirmed to be in full communion with the Holy See