3. In the papal chapel, immediately after the prophecies, the Celebrant takes off his chasuble, and prostrates himself with the sacred ministers before the altar; all the others also kneel, and two tenor voices from the choir chant in the middle of the chapel the greater litanies, called those of the saints, each petition of which is repeated in the same words by the choir[122]. Before the verse "_Peccatores te rogamus audi nos_" the assistant priest and ministers go to the sacristy, and put on white vestments. Then returning to the chapel they assist the Card. Celebrant to put on his white vestments at his _faldistorio_. The candles are now lighted (at the _Agnus Dei_ of the litany, as the Sacramentary of S. Gregory and the Ordo Romanus prescribe); the purple veil which covered the throne and the purple _paliotto_ or facing of the altar are removed; and both appear decked in white. The Cardinals assisted by theirs _caudatarii_ take off their purple _cappe_, and put on others of scarlet brought in by their respective _camerieri_. The reason of this sudden change from mourning to rejoicing we have already seen: the celebration of Christ's resurrection from the dead is celebrated by anticipation. [Sidenote: High mass.] At the end of the litanies, the Pope (if His Holiness were not present at the preceding ceremonies) enters the chapel, wearing a white cope and a mitre; at the foot of the altar he repeals as usual the beginning of the mass with the Card. Celebrant at His left hand: in the meantime the choir sings solemnly the _Kyrie eleison_ etc. (as there is no _Introit_ of the Mass, because the people were assembled in the church previously): the Pope goes to His throne, and receives the usual _ubbidienza_; and the other customary ceremonies of high mass in the papal chapel take place (see p. 19 and foll.) with such exceptions as we shall now mention. As soon as the Celebrant commences the _Gloria in excelsis_, the veil is removed from the tapestry over the altar; which represents Christ rising from the dead[123], the cannons of S. Angelo are discharged, the arms are no longer reversed and the bells of the city are tolled, to announce to its faithful inhabitants the resurrection of their Divine Lord. [Sidenote: Alleluja.]