ルカ2:21 さて、子どもに割礼を行なう八日目になったので、胎内にやどる前に天使がつげたように、その子の名をイエズスとつけた。
The Feast of the Circumcision of Christ 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)[1] after his birth, the occasion on which the child was formally given his name.
The circumcision of Jesus has traditionally been seen, as explained in the popular 14th-century work the Golden Legend, 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.
Pope John XXIII's 1960 rubrical and calendrical revision called 1 January simply the Octave of the Nativity. (This 1960 calendar was incorporated into the 1962 Roman Missal, whose continued use is authorized by the motu proprio Summorum Pontificum.) The 1969 revision states: "1 January, the Octave Day of the Nativity of the Lord, is the Solemnity of Mary, the Holy Mother of God, and also the commemoration of the conferral of the Most Holy Name of Jesus."
https://en.wikipedia.org/wiki/Feast_of_the_Circumcision_of_Christ
The event is celebrated as the Feast of the Circumcision in the Eastern Orthodox Church on January 1 in whichever calendar is used, and is also celebrated on the same day by many Anglicans. It is celebrated by Roman Catholics as the Feast of the Holy Name of Jesus, in recent years on January 3 as an Optional Memorial, though it was for long celebrated on January 1, as some other churches still do. A number of relics claiming to be the Holy Prepuce, the foreskin of Jesus, have surfaced.
https://en.wikipedia.org/wiki/Circumcision_of_Jesus
According to David Farley, in 1900, the Roman Catholic Church resolved the dilemma by ruling that anyone thenceforward writing or speaking of the Holy Prepuce would be excommunicated.Again, according to Farley, in 1954, after much debate, the punishment was changed to the harsher degree of excommunication, vitandi (shunned); Farley also says that the Second Vatican Council later removed the Day of the Holy Circumcision from the Latin church calendar, although Eastern Catholics and Traditional Roman Catholics still celebrate the Feast of the Circumcision of Our Lord on January 1. In reality, it was more than two years before 11 October 1962, the date when the Second Vatican Council began, that a 25 July 1960 decree of Pope John XXIII enacted a wide-ranging revision of the General Roman Calendar, which included changing the name of the 1 January feast from "Circumcision of the Lord and Octave of the Nativity" to "Octave of the Nativity", with no change of the Gospel reading about the circumcision of the child Jesus.
https://en.wikipedia.org/wiki/Holy_Prepuce
The Feast of the Circumcision of Christ 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)[1] after his birth, the occasion on which the child was formally given his name.
The circumcision of Jesus has traditionally been seen, as explained in the popular 14th-century work the Golden Legend, 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.
Pope John XXIII's 1960 rubrical and calendrical revision called 1 January simply the Octave of the Nativity. (This 1960 calendar was incorporated into the 1962 Roman Missal, whose continued use is authorized by the motu proprio Summorum Pontificum.) The 1969 revision states: "1 January, the Octave Day of the Nativity of the Lord, is the Solemnity of Mary, the Holy Mother of God, and also the commemoration of the conferral of the Most Holy Name of Jesus."
https://en.wikipedia.org/wiki/Feast_of_the_Circumcision_of_Christ
The event is celebrated as the Feast of the Circumcision in the Eastern Orthodox Church on January 1 in whichever calendar is used, and is also celebrated on the same day by many Anglicans. It is celebrated by Roman Catholics as the Feast of the Holy Name of Jesus, in recent years on January 3 as an Optional Memorial, though it was for long celebrated on January 1, as some other churches still do. A number of relics claiming to be the Holy Prepuce, the foreskin of Jesus, have surfaced.
https://en.wikipedia.org/wiki/Circumcision_of_Jesus
According to David Farley, in 1900, the Roman Catholic Church resolved the dilemma by ruling that anyone thenceforward writing or speaking of the Holy Prepuce would be excommunicated.Again, according to Farley, in 1954, after much debate, the punishment was changed to the harsher degree of excommunication, vitandi (shunned); Farley also says that the Second Vatican Council later removed the Day of the Holy Circumcision from the Latin church calendar, although Eastern Catholics and Traditional Roman Catholics still celebrate the Feast of the Circumcision of Our Lord on January 1. In reality, it was more than two years before 11 October 1962, the date when the Second Vatican Council began, that a 25 July 1960 decree of Pope John XXIII enacted a wide-ranging revision of the General Roman Calendar, which included changing the name of the 1 January feast from "Circumcision of the Lord and Octave of the Nativity" to "Octave of the Nativity", with no change of the Gospel reading about the circumcision of the child Jesus.
https://en.wikipedia.org/wiki/Holy_Prepuce