"Contemplating is receiving." (St. John of the Cross) What we receive in prayer is the Spirit, who makes all creation new, moment by moment. It is the Spirit who rebirths us within the caves of our hearts. The case is a metaphor for this silent withdrawal, this going away to be alone, to listen, to gestate the Spirit, to rebirth ourselves. The reborn self is the child of wisdom born in solitude.
To acknowledge the Sacred within is humbling. One's ego portrays itself as the captain of its separate destiny, like an intrepid explorer, seeing things and naming them for the first time. Ego doesn't care for the idea that MY hunger for love, MY grief, and MY thankfulness are not only mine but also God's in me. As our egos die into Love, we see that our personal stories are transparent to an infinitely larger story within us. Suffering "in God" is allowing our small stories to be like icons, transmitting a Great Light.