The form of the Liturgy and Services of Baptism and Unction found here reflect a true Celtic usage dating before 650 AD. Whether this is the usage brought by Saint Patrick in the early Fifth century, or a later revision is not certain, but this is a usage which was used during an era age in which Christianity was neither universal nor fully understood. Therefore, it explains in graphic detail the redemptive acts of the incarnation of Jesus Christ, his birth, death and resurrection. The writer(s) assumes that those participating in the Eucharist must have every detail repeated clearly.