A paragraph from a piece by Peter Berger, via Anthony Sacramone:
The Lutheran understanding of the Eucharist implies a view of creation itself being a sacrament. All of nature, the world as perceived in ordinary experience and in empirical science, is sacramental—in the words of the Book of Common Prayer, displays “outward and visible signs of an inward and spiritual grace.” In one of my earlier ventures into unauthorized theologizing, I adumbrated this proposition by the phrase “signals of transcendence”: God, as it were, hides in the universe, but here and there we can find signs of his presence. In their understanding of the Eucharist, Lutherans used the phrase finitum capax infiniti—“the finite can contain the infinite.” The finite, perishable elements of bread and wine can, invisibly, contain the infinite, eternal presence of the risen Christ. But so can the finite, perishable reality of the empirical universe. George Forell, one of the best American interpreters of the Reformation, opined that the phrase finitum capax infiniti expressed the very core of Lutheran faith.
I would just observe that the Lutheran doctrine of vocation is also sacramental in this sense. Not a sacrament, I hasten to add, but an example of how God works through and by means of the physical world. Vocation, according to Luther, is all about how God works through human beings (giving daily bread by means of farmers and bakers, creating and caring for new life through parents, protecting us through lawful magistrates, granting healing by means of the medical professions, teaching through teachers, expressing beauty by meaning by means of artists, proclaiming His Word and administering His sacraments by means of pastors, etc., etc.). other gifts