Pilgrim's Progress §161: About the midst of this valley, I perceived the mouth of hell to be, and it stood also ...

About the midst of this valley, I perceived the mouth of hell to be, and it stood also hard by the wayside. Now, thought Christian, what shall I do? And ever and anon the flame and smoke would come out in such abundance, with sparks and hideous noises, (things that cared not for Christian's sword, as did Apollyon before), that he was forced to put up his sword, and betake himself to another weapon called All-prayer. So he cried in my hearing, "O Lord, I beseech thee, deliver my soul!" Thus he went on a great while, yet still the flames would be reaching towards him. Also he heard doleful voices, and rushings to and fro, so that sometimes he thought he should be torn in pieces, or trodden down like mire in the streets. This frightful sight was seen, and these dreadful noises were heard by him for several miles together; and, coming to a place where he thought he heard a company of fiends coming forward to meet him, he stopped, and began to muse what he had best to do. Sometimes he had half a thought to go back; then again he thought he might be half way through the valley; he remembered also how he had already vanquished many a danger, and that the danger of going back might be much more than for to go forward; so he resolved to go on. Yet the fiends seemed to come nearer and nearer; but when they were come even almost at him, he cried out with a most vehement voice, "I will walk in the strength of the Lord God!" so they gave back, and came no further.