Pilgrim's Progress §162: One thing I would not let slip.

One thing I would not let slip. I took notice that now poor Christian was so confounded, that he did not know his own voice; and thus I perceived it. Just when he was come over against the mouth of the burning pit, one of the wicked ones got behind him, and stepped up softly to him, and whisperingly suggested many grievous blasphemies to him, which he verily thought had proceeded from his own mind. This put Christian more to it than anything that he met with before, even to think that he should now blaspheme him that he loved so much before; yet, if he could have helped it, he would not have done it; but he had not the discretion either to stop his ears, or to know from whence these blasphemies came.