Christian commitment is told by way of parable in Tennyson’s story of the Holy Grail:

One knight, riding on the quest, came upon laden fruit trees but even as he ate the fruit it turned to dust. No feeding of the body could satisfy the soul. Riding on, he found a gracious woman and a home. Surely the love of a woman and the sweet shelter of a home was what he wanted. He said, “But when I touched her, lo! she too, fell into dust and nothing, and the house became no better than a broken shed.”

Only the Holy Grail could satisfy.