The Sacred Flame by Selma Lagerlof

The next morning at dawn Raniero mounted his horse. He was in full armor, but over it he had thrown a coarse pilgrim cloak, so that the iron dress should not become overheated by exposure to the sun's rays. He was armed with a sword and battle-club, and rode a good horse. He held in his hand a burning candle, and to the saddle he had tied a couple of bundles of long wax candles, so the flame should not die out for lack of nourishment.

Raniero rode slowly through the long, encumbered tent street, and thus far all went well. It was still so early that the mists which had arisen from the deep dales surrounding Jerusalem were not dispersed, and Raniero rode forward as in a white night. The whole troop slept, and Raniero passed the guards easily. None of them called out his name, for the mist prevented their seeing him, and the roads were covered with a dust-like soil a foot high, which made the horse's tramp inaudible.