The Roman Missal: Advent to the Sundays after Epiphany (English) 15
4[Commemoration of the Nativity alone, as above.]
5Epistle. Hebrews, v. 1—6. Brethren, every high priest taken from among men, is ordained for men in the things that appertain to God, that he may offer up gifts and sacrifices for sins: who can have compassion on them that are ignorant and that err, because he himself also is compassed with infirmity; and therefore he ought, as for the people, so also for himself, to offer for sins. Neither doth any man take the honour to himself, but he that is called by God, as Aaron was. So Christ also did not glorify himself that he might be made a high priest; but he that said unto him, Thou art my Son, this day have I begotten thee. As he saith also in another place, Thou art a priest for ever, according to the order of Melchisedech.
7Gospel. St John, x. 11—16. At that time, Jesus said to the Pharisees, I am the good shepherd. The good shepherd giveth his life for the sheep. But the hireling, and he that is not the shepherd, whose own the sheep are not, seeth the wolf coming and leaveth the sheep, and flieth; and the wolf catcheth, and scattereth the sheep: and the hireling flieth, because he is a hireling, and he hath no care for the sheep. I am the good shepherd; and I know mine, and mine know me. As the Father knoweth me, and I know the Father; and I lay down my life for my sheep. And other sheep I have, that are not of this fold; them also I must bring, and they shall hear my voice, and there shall be one fold and one shepherd.
8[Credo.]
9Offertory. Thou hast set on his head, O Lord, a crown of precious stones: he asked life of thee, and thou hast given it to him. Alleluia.
10Secret. Sanctify, O Lord, the offerings consecrated to thee; and by the intercession of blessed Thomas, thy martyr and bishop, appeased by the same, look down favourably upon us. Through, &c.
11[Secret of the Nativity, as above.]
12Communion. I am the good shepherd, and I know my sheep, and mine know me.
13Postcom. Hæc nos. May this communion, O Lord, purify us from crime: and by the intercession of blessed Thomas, thy martyr and bishop, make us partakers of a heavenly remedy. Through, &c.
14[Postcommunion of the Nativity, as above.]
15[If any of the preceding Feasts fall on a Sunday, the office of the Sunday is transferred till the day after St Thomas. But if that day be Saturday, the Mass of the Octave of the Nativity is said; and, on St Sylvester, is made a Commemoration of the Sunday and of the Octaves.]