Job 9:30

This is not to be done by ceremonial ablutions, moral services, or evangelical ordinances; this is God's work only, as appears from his promises to cleanse his people from their sins, by sprinkling clean water upon them; from the end of Christ's shedding his blood, and the efficacy of it; and from the prayers of the saints, that God would wash them thoroughly from their iniquity, and cleanse them from their sin, and create clean hearts in them: and yet such exhortations are not in vain, since they may be useful to convince men of their pollution, who are pure in their own eyes, as these hypocritical, nominal professors, might be; and to bring them to a sense of their inability to cleanse themselves, and of the necessity of being cleansed elsewhere; and to lead them to inquire after the proper means of cleansing, and so to the fountain of Christ's blood, which only cleanses from all sin