According to Hugh Nibley, warriors in the Book of Mormon—from the Jaredites to the final battle between the Nephites and Lamanites—consistently conform to the chivalric rules of battle. As examples of such observance, he lists “enemies agreeing to the time and place of the slaughter, chiefs challenging each other to single combat for the kingdom, and so on.” Nibley also explains that in the War Scroll of the Dead Sea Scrolls, soldiers in the army are required to be volunteers and to be clean and blameless, that the angels of God might provide divine assistance in battle. In fact, the scroll states that “no indecent, evil thing shall be seen in the vicinity of any of your camps.” Righteous armies in the Book of Mormon followed these criteria, most prominently in the account of Helaman and his two thousand stripling warriors. (See Echoes, 479–480.)