Fulgentius of Ruspe

What is called the prince of flies is shown to be prince of the wicked; another text of Scripture refers to him by saying, “Dead flies destroy the perfumer’s sweet ointment.” Who destroy except those who grieve the Holy Spirit either by the crime of infidelity or by the filthy obscenity of unclean deeds, while befouling themselves either with a false faith or an evil way of life?