Infant baptism is the practice of baptising infants or young children. In theological discussions, the practice is sometimes referred to as paedobaptism, or pedobaptism, from the Greek pais meaning "child". The practice is sometimes contrasted with what is called "believer's baptism", or credobaptism, from the Latin word credo meaning "I believe", which is the religious practice of baptising only individuals who personally confess faith in Jesus, therefore excluding underage children. Opposition to infant baptism is termed catabaptism. Infant baptism is also called "christening" by some faith traditions.
Most Christians belong to denominations that practice infant baptism.Denominational families that practise infant baptism include Catholics, Eastern and Oriental Orthodox, Anglicans, Lutherans, Presbyterians and other Reformed denominations, Methodists and some Nazarenes, and the Moravian Church.
The exact details of the baptismal ceremony vary among Christian denominations. Many follow a prepared ceremony, called a rite or liturgy. In a typical ceremony, parents or godparents bring their child to their congregation's priest or minister. The rite used would be the same as that denomination's rite for adults, i.e., by pouring holy water (affusion) or by sprinkling water (aspersion). Eastern Orthodox and Eastern Catholic traditions practise total immersion and baptise babies in a font, and this practice is also the first method listed in the baptismal ritual of the Roman Catholic, although pouring is the standard practice within the Latin branch of Catholicism. Catholic and Orthodox churches that do this do not sprinkle. At the moment of baptism, the minister utters the words "I baptise you (or, 'The servant of God (name) is baptised') in the name of the Father, and of the Son, and of the Holy Spirit" (see Matthew 28:19).