6.  For the heretics, who are most profane in all things, have sharpened their tongue Ps. cxl. 3. against the Holy Ghost also, and have dared to utter impious things; as Irenæus the interpreter has written in his injunctions against heresies Irenæus is called “the interpreter” in the same general sense as other ecclesiastical authors (Cat. xiii. 21; xv. 20), on account of his frequent comments upon the Scriptures.  The full title of his work was A Refutation and Subversion of Knowledge falsely so called (Euseb. Hist. Eccles. V. c. 7).  Cyril’s expression (ἐν τοῖς προστάγμασι) is sufficiently appropriate to the hortatory purpose professed by Irenæus in his preface.  But the Benedictine Editor thinks that the word προστάγμασι may be an interpolation arising from the following words πρὸς τὰς.…The meaning would then be “in his writings Against Heresies,” the usual short title of the work..  For some of them have dared to say that they were themselves the Holy Ghost;—of whom the first was Simon Cat. vi. 14, note 10., the sorcerer spoken of in the Acts of the Apostles; for when he was cast out, he presumed to teach such doctrines:  and they who are called Gnostics, impious men, have spoken other things against the Spirit Irenæus (I. xxix § 4; xxx. § 1)., and the wicked Valentinians Ib. I. ii. §§ 5, 6. again something else; and the profane Manes dared to call himself the Paraclete sent by Christ Cat. vi. 25..  Others again have taught that the Spirit is different in the Prophets and in the New Testament. Cat. iv. 33.  See § 3, note 3, above.  Yea, and great is their error, or rather their blasphemy.  Such therefore abhor, and flee from them who blaspheme the Holy Ghost, and have no forgiveness.  For what fellowship hast thou with the desperate, thou, who art now to be baptized, into the Holy Ghost also i.e. as well as into the Father and the Son.?  If he who attaches himself to a thief, and consenteth with him, is subject to punishment, what hope shall he have, who offends against the Holy Ghost?