3. Again, seeing that we spoke of the Hydra and Scylla (I. vi. 46), and brought them in by way of comparison, to show how we must beware, whether of the ever-renewed outgrowths of infidelity, or the ill-omened shipwrecks made upon its shallows, if any one holds that such embellishments of an argument, borrowed from the romances of poets, are unlawful, and, from lack of opportunity to speak evil of my faith, assails something in my language, then let him know that not only phrases but complete verses of poetry have been woven into the text of Holy Writ.