John the Deacon (6th century)
John the Deacon was a deacon in the Church of Rome during the pontificate of Pope Symmachus. He is known only from an epistle he wrote to a Senarius, a vir illustris who had asked him to explain aspects of Christian initiatory practice. John's response provides a "rather full description" of the catechumenal process and initiation rites at Rome at the beginning of the 6th century. He covers prebaptismal exorcisms; the ritual use of salt; the anointing of the ears, nostrils, and breast of the candidate; the use of milk and honey for first communion; ritual nudity and immersion; special white clothing for the newly baptized; and the need for even infants to undergo the process, saying that
