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Because we believe that Christ instituted the sacraments as means for our salvation.
I believe it was Jesus Christ himself
because he wanted us to love eachother
Roman Catholic AnswerAll of the sacraments were instituted by Jesus Christ while He was on earth, including matrimony.
Because they are the seven sensible signs instituted by Jesus Christ to impart grace and inward sanctification to the souls of people. Every other similar thing is referred to as a sacramental, as it is like a sacrament but was not instituted by Jesus Christ.
I assume you are referring to the seven sacraments of Catholicism and the Orthodox Churches. The Catholics and Orthodox (which were a single Church until the twelth century, more or less), believe that the seven Sacraments were instituted by Jesus Christ Himself, in an early form, when He was on earth. The seven sacraments are Baptism, Confession or Reconciliation, Eucharist (Communion), Confirmation, Holy Orders, Matrimony (Marriage), and Viaticum (Anointing of the Sick).
Roman Catholic AnswerThe reduction of sacraments refers to Martin Luther "throwing out" five of the seven sacraments as he didn't believe they were instituted by Jesus Christ. The two he kept were baptism and Holy Communion (well, a shadow of the Eucharist); the five he threw out were Confirmation, Reconciliation (or Confession), Holy Orders, Matrimony, and Anointing of the Sick.
He simply did not. He only asked our remembrance of Him annually at the Passover supper and instituted new symbols of bread (His marred body) and wine (His shed blood). Baptism was already a common event in Judaism and continues on in Christianity (see Acts 2:38-41). The sacraments many know today were begun and designed by the Church of Rome.
Jesus directly instituted two sacraments, Baptism and the Lord's Supper (or Holy Communion, commonly called the Eucharist or the Mass); five others, Confirmation, Holy Matrimony, Reconciliation (confession and absolution), Ordination and Anointing of the Sick, are commonly called sacraments, but were not directly instituted by him.
Only Baptism and Communion ( Eucharist) can be directly traced to the Bible- the actions of John the Baptist and the Last Supper. All of the others are (cultural) but have divine status as Sacraments. There are only 7, however there are innumerable types of blessings in the Roman Ritual, which are often not strictly speaking, Masses.
Ecclesiastical . a visible sign of an inward grace, especially one of the solemn Christian ritesconsidered to have been instituted by Jesus Christ to symbolize or confer grace: the sacraments ofthe Protestant churches are baptism and the Lord's Supper; the sacraments of the Roman Catholicand Greek Orthodox churches are baptism, confirmation, the Eucharist, matrimony, penance, holyorders, and extreme unction.
.Roman Catholic AnswerNo, the sacraments are the means by which Our Blessed Lord set up - through His Church - to communicate saving grace to us. fromThe Catechism of the Catholic Church, second edition, English translation 19941084"Seated at the right hand of the Father" and pouring out the Holy Spirit on his Body which is the Church, Christ now acts through the sacraments he instituted to communicate his grace. The sacraments are perceptible signs (words and actions) accessible to our human nature. By the action of Christ and the power of the Holy Spirit they make present efficaciously the grace that they signify.1131The sacraments are efficacious signs of grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us. The visible rites by which the sacraments are celebrated signify and make present the graces proper to each sacrament. They bear fruit in those who receive them with the required dispositions.