morning of the day designated by the congregations of cardinals, the cardinal electors assemble in Saint Peter's Basilica to celebrate Mass. Then they gather in the afternoon in the Pauline Chapel in the Apostolic Palace and process to the Sistine Chapel while singing the Litany of the Saints. The cardinals will also sing the "Veni Creator Spiritus", invoking the Holy Spirit, then take an oath to observe the procedures set down by the apostolic constitutions; to, if elected, defend the liberty of the Holy See; to maintain secrecy; and to disregard the instructions of secular authorities on voting. The senior cardinal reads the oath aloud in full; in order of precedence (where their rank is the same, their seniority is taken as precedence), the other cardinal electors repeat the oath, while touching the Gospels. The oath is: Expelling the outsiders After all the cardinals present have taken the oath, the master of papal liturgical celebrations orders all individuals other than the cardinal electors and conclave participants to leave the chapel. Traditionally, he stands at the door of the Sistine Chapel and calls out: "" (). He then closes the door. In modern practice, the master of papal liturgical celebrations does not have to stand at the door of the Sistine Chapel—during the 2013 conclave, the master Guido Marini stood in front of the altar and gave the command through a microphone and only went to the chapel doors to close them after the outsiders had left. The master himself may remain, as may one ecclesiastic designated by the congregations prior to the commencement of the election. The ecclesiastic makes a speech concerning the problems facing the Church and on the qualities the new pope needs to have. After the speech concludes, the ecclesiastic leaves. Following the recitation of prayers, the senior cardinal asks if any doubts relating to procedure remain. After the clarification of the doubts, the election may commence. Cardinals who arrive after the conclave has begun are admitted nevertheless. A sick cardinal or a cardinal who has to use the lavatory may leave the conclave and later be readmitted; a cardinal who leaves for any reason other than illness may not return to the conclave. Although in the past cardinal electors could be accompanied by attendants ("conclavists"), now only a nurse may accompany a cardinal who for reasons of ill-health, as confirmed by the Congregation of Cardinals, needs