In this he points out that Clement VIII had already issued a uniform text of the Pontifical and the Caerimoniale Episcoporum (The Ceremonial of Bishops), which determines the functions of many other ecclesiastics besides bishops. The Caerimoniale Episcoporum forms the indispensable complement of other liturgical books for priests too.) "It remained", the pope continues, "that the sacred and authentic rites of the Church, to be observed in the administration of sacraments and other ecclesiastical functions by those who have the care of souls, should also be included in one book and published by authority of the Apostolic See; so that they should carry out their office according to a public and fixed standard, instead of following so great a multitude of Rituals".
But, unlike the other books of the Roman Rite, the Ritual has never been imposed as the only standard.
The ceremonies also contained in the Missal (holy water, the processions of Candlemas and Palm Sunday, etc.), and the prayers also in the Breviary (the Office of the Dead) are necessarily identical with those of Paul V's Ritual; these have the absolute authority of the Missal and Breviary.
On the other hand, many countries have local customs for Marriage, the visitation of the sick, etc., numerous special blessings, processions and sacramentals not found in the Roman book, still printed in various diocesan Rituals.
Paul V did not abolish all other collections of the same kind, nor command every one to use only his book.