Shepherd of Hermas Similitude Fifth 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.[9] The Ecclesiastical Canons of the Holy Apostles 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? "[20]