There are seven sacraments of the Catholic Church, which according to Catholic theology were instituted by Jesus Christ and entrusted to the Church. Sacraments are visible rites seen as signs and efficacious channels of the grace of God to all those who receive them with the proper disposition.

The sacraments are often classified into three categories: the sacraments of initiation (into the Catholic Church and the mystical body of Christ), consisting of Baptism, Confirmation, and the Eucharist; the sacraments of healing, consisting of the Sacrament of Penance and the Anointing of the Sick; and the sacraments of service: Holy Orders and Matrimony.

Furthermore, Baptism and penance were also known as the “sacraments of the dead” (in the meaning that the souls of the sinners which are regarded dead before God may obtain life through these sacraments), whereas the other five are collectively the “sacraments of the living”.