Apostolic Tradition 20

1They who are to be set apart for baptism shall be chosen after their lives have been examined: whether they have lived soberly, whether they have honoured the widows, whether they have visited the sick, whether they have been active in well-doing. When their sponsors have testified that they have done these things, then let them hear the Gospel. Then from the time that they are separated from the other catechumens, hands shall be laid upon them daily in exorcism and, as the day of their baptism draws near, the bishop himself shall exorcise each one of them that he may be personally assured of their purity. Then, if there is any of them who is not good or pure, he shall be put aside as not having heard the word in faith; for it is never possible for the alien to be concealed. Then those who are set apart for baptism shall be instructed to bathe and free themselves from impurity and wash themselves on Thursday. If a woman is menstruous, she shall be set aside and baptized on some other day. They who are to be baptized shall fast on Friday, and on Saturday the bishop shall assemble them and command them to kneel in prayer. And, laying his hand upon them, he shall exorcise all evil spirits to flee away and never to return; when he has done this he shall breathe in their faces, seal their foreheads, ears and noses, and then raise them up. They shall spend all that night in vigil, listening to reading and instruction. They who are to be baptized shall bring with them no other vessels than the one each will bring for the eucharist; for it is fitting that he who is counted worthy of baptism should bring his offering at that time.