In Christianity, baptism (from Greek βάπτισμα an βαπτισμός, meaning "immersing", "performing ablution" - see below) is the sacramental act of cleansing in water that admits one as a full member of the Church. Most Christians, such as Roman Catholics, Eastern Orthodox, Lutherans, Anglicans, and Methodists are baptized as infants. Baptists and certain other groups baptize only after a person accepts Jesus Christ as their Savior ("believer's baptism"). Most Christians baptize in the name of the Father, Son, and Holy Spirit, but some baptize in Jesus' name only.