Introibo Ad Altare Dei

Palm Sunday (Last year) at the Vatican, With Pope Benedict XVI.

The sorrows of death surrounded me, the sorrows of hell encompassed me: and in my affliction I called upon the Lord, and He heard my voice from His holy temple. I will love Thee, O Lord, my strength: the Lord is my firmament, my refuge, and my deliverer, Glory be to the Father and to the Son and to the Holy Spirit, now and forever and unto the ages of ages.

The introit (entrance chant) for septuagesima sunday

The Feast of the Circumcision of Christ- January 1st, Tridentine calendar

is a Christian celebration of the circumcision of Jesus in accordance with Jewish tradition, eight days (according to the Semitic and southern European calculation of intervals of days) after his birth, the occasion on which the child was formally given his name.

The circumcision of Jesus has traditionally been seen as the first time the blood of Christ was shed, and thus the beginning of the process of the redemption of man, and a demonstration that Christ was fully human, and of his obedience to Biblical law.

Celebrated in the Eastern Orthodox and Catholic Churches.