Baptism is one of the seven sacraments.
Presbyterians have only two sacraments: The Lord's Supper and Baptism. Other rites such as marriage, confirmation and ordination are important, but not regarded as sacramental.
1. Baptism 2 Confirmation 3 Matrimony 4 Holy Order 5 Anointing of the sick 6 Penance 7 Holy Eucharist
There are only 2 Lutheran Sacraments, at least for the Missouri synod: Holy Baptism, they wash the person's head with Holy water. (generally from one month to 2 years of age) and Holy Communion, where you take the bread and the wine (body and blood of Jesus Christ) and eat it, in remembrance of Christ's sacrifice.
A priest.
Christ instituted the sacraments of the new law. There are seven: Baptism, Confirmation (or Chrismation), the Eucharist, Penance, the Anointing of the Sick, Holy Orders and Matrimony. The seven sacraments touch all the stages and all the important moments of Christian life:1 they give birth and increase, healing and mission to the Christian's life of faith. There is thus a certain resemblance between the stages of natural life and the stages of the spiritual life.
Most adults in the Rite of Christian Initiation of Adults (RCIA) celebrate the Sacraments of Initiation (Baptism, Confirmation, and Eucharist) at the Easter Vigil Mass on Holy Saturday night.
They have seven sacraments. Baptism, by which a person enters the Church. Chrismation bestows upon us the Holy Spirit. Holy Communion in which they receive the Body and Blood of Jesus Christ. Confession with a priest for the forgiveness of sins. Marriage and Ordination to the sacred priesthood. Holy Oil (Unction) which the faithful are anointed when they are ill with for the healing of soul and body and for the forgiveness of sins.
Most Christians believe that baptism forgives ones sins- anything bad they may have done in their life.
The seven gifts of the Holy Spirit are given in baptism. We grow in them by practicing virtue throughout our lives and the gifts are sealed in us at confirmation.
Roman Catholicism recognizes 7 sacraments.
excommunication
No and you don't need all the sacraments. You can't usually be a priest and be married.