
The fourth Sunday of Advent is a semi-double Sunday of the second class and its liturgical colour is violet. Only a double of the first class feast may displace the Sunday in occurrence. So, this year, the feast of St. Thomas the Apostle is transferred to Monday, although his Vigil Mass was observed on Saturday. The Gospel pericopes from St. Luke concern the preaching of St. John the Baptist preaching the baptism of repentance by the Jordan and the reference to Isaias "Prepare ye the way of the LORD: make straight His paths: every valley shall be filled: and every mountain and hill shall be brought low, and the crooked shall be made straight, and the rough ways plain: and all flesh shall see the salvation of God."
Yesterday afternoon the antiphons Canite tuba, from Lauds, were sung, not-doubled, with the psalms of Saturday. The Office hymn was Creator alme siderum. The Great 'O' Antiphon O clavis David proper to the twentieth day of December sung standing. The Suffrage is omitted in Advent. At Compline the Dominical preces were sung.
At Mattins the invitatory is Prope est jam Dominus * Venite adoremus and the Office hymn is Verbum supernum prodiens. In the first nocturn the lessons are taken, as usual in Advent, from Isaias. In the second nocturn the lessons are again taken from St. Leo's sermon on the fast of the tenth month. The homily in the third nocturn is from the twentieth homily of St. Gregory on St. Luke's Gospel. A ninth responsory, Intuemini, quantus sit iste, is sung in place of the Te Deum. At Lauds the antiphons proper to the Sunday, Canite tuba etc., are sung with the Dominical psalms. The Office hymn is En clara vox. The Suffrage is omitted in Advent.
At the Hours the antiphons from Lauds are used in the usual sequence. At Prime the versicle in the short responsory is Qui venturus es in mundum and the Dominical preces are sung.
Mass is sung after Terce. The ministers wear violet folded chasubles. The Gloria is omitted. The second collect is of the BVM in Advent, Deus qui de beate, the third collect Ecclesiae etc. The Creed and the preface of the Trinity are sung. As the Gloria is not sung the dismissal is Benedicamus Domino, sung by the deacon facing the altar.
After None there is a colour change to red and first Vespers of St. Thomas are sung. The antiphons Hoc est praeceptum meum etc are sung, doubled, with Pss. 109, 110, 111, 112 & 116. The Office hymn is Exsultet orbis gaudiis. After the collect of the feast a commemoration of the Sunday is sung (the antiphon on the Magnificat being O Oriens). At Compline the Dominical preces are omitted.
In the 'liturgical books of 1962' the Vigil of St. Thomas has been abolished. At Vespers there are no commemorations. The Dominical preces have been abolished at Compline and Prime. Mattins is cut down to a single nocturn of three lessons as usual. At Mass the ministers wear dalmatic and tunicle, there is only one collect and the dismissal is Ite, missa est Vespers are of the Sunday, without any commemorations. The feast of St. Thomas, except where it is '1Cl' is omitted this year entirely.
Art: Jerome Nadal






