For the processions that formed part of the ritual of the Eucharist, those of the introit, the gospel and the oblation, the earliest records date from the 6th century and even later, but they evidently were established at a much earlier date. As to public processions, these seem to have come into rapid vogue after the recognition of Christianity as the religion of the empire. Those at Jerusalem would seem to have been long established when described by the author of the "Peregrinatio Sylviae" towards the end of the 4th century.