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.