A liturgical book is a collection of texts used in religious services, particularly in the context of Christian worship. These books contain prayers, hymns, readings, and instructions for conducting rituals and ceremonies. Common examples include the Missal, which guides the celebration of the Mass, and the Breviary, used for daily prayers. Liturgical books vary among different denominations, such as the Roman Catholic Church, the Eastern Orthodox Church, and various Protestant traditions. They play a crucial role in maintaining the structure and flow of worship, ensuring that rituals are performed consistently and meaningfully across congregations.