Most ecclesiastical relics are fixed in time at the moment of their manufacture. That is why they are offered for veneration in casings that resemble pocket watches. They have lost their claim to mystery because they are so clearly the products of time.
Human experience resembles the battered moon that tracks us in cycles of light and darkness, of life and death, now seeking out and now stealing away from the sun that gives it light and symbolizes eternity.
Catholicism actually resembles a family that survives because even as it aspires to holiness, it understands and can live with sin and imperfection.