Apostolic Constitutions : We command that a bishop, or presbyter, or deacon who receives the baptism, or the sacrifice of heretics, be deprived: "For what agreement is there between Christ and Belial? or what part hath a believer with an infidel?" — The Ecclesiastical Canons of the Same Holy Apostles John Chrysostom : "In stripes, in imprisonments, in tossings to and fro." Yet every one of these by itself was intolerable, the being scourged only, and being bound only, and being unable through persecution to remain fixed any where, (for this is "in tossings to and fro,") but when both all, and all at once, assail, consider what a soul they need. Then along with the things from without, he mentions those imposed by himself. "In labors, in watchings, in fastings; in pureness." But by "pureness" here, he means either chasteness again, or general purity, or incorruptness, or even his preaching the Gospel freely. — Homily 12 on 2 Corinthians Shepherd of Hermas : Be on your guard against every evil word, and every evil desire, and purify your heart from all the vanities of this world. If you guard against these things, your fasting will be perfect. And you will do also as follows. Having fulfilled what is written, on that day on which you fast you will taste nothing but bread and water; and from your meats, which you would have eaten, you will calculate the amount of that day's expenditure, which you would have incurred, and will give it to a widow, or an orphan, or to one in want, and thus you will exhibit humility of mind, so that he who has received benefit from your humility may fill his own soul, and pray for you to the Lord. — Shepherd of Hermas, Similitude 5