The Quest of the Holy Grail adds a spiritual dimension to the adventures of Arthur's knights: Galahad replaces Lancelot as the central figure The central concept of the Grail was never accepted by the Church, and the Quest remains a secular romance which can be interpreted as a spiritual allegory. The adventures have a strong element of the magical and otherworldly, and the story is more closely structured than Lancelot, with the accomplishment of the Grail adventure by Galahad, Perceval and Bors as its centre and culmination.