The Litany of the Saints (Latin, Litania Sanctorum) is a sacred prayer of the Roman Catholic Church. It is a prayer of invocation to the Triune God, and prayers for the intercession of the Blessed Virgin Mary, the Angels and all the martyrs and saints upon whom Christianity was founded. It is most prominently sung during the Paschal Vigil at the beginning of Sacraments of Initiation for those to be received that night into the Church, in other celebrations of the Sacrament of Baptism (the first of the Sacraments of Initiation,) and in the liturgy for Holy Orders.