“It is noticeable that with systematic discipline as to the persons taught, there was no order of teachers. It was part of the pastoral office to watch over the souls of those who were seeking admission to the Church, as well as those who were in it, and thus bishops, priests, deacons, or readers might all of them be found, when occasion required, doing the work of a Catechist. The Doctor Audientium of whom Cyprian speaks, was a Lector in the Church of Carthage. Augustine’s Treatise de Catechizandis Rudibus, was addressed to Deogratias as a deacon; the Catecheses of Cyril of Jerusalem were delivered by him partly as a deacon, partly as a presbyter. The word catechist implies accordingly a function, not a class.” Dean Plumptre in Dict. Christ. Ant. i. 319.