Throughout church history, God’s initiative in grace has always been accompanied by tangible and concrete signs. For example, in worship I experience God’s presence and action toward me through the sign of the Bible and through the signs of bread and wine, the Holy Communion. In turn, I respond to God through these signs. This means that in worship there is a descending line established by God and an ascending line represented by my faith. And the intersecting point of these lines is the visible and tangible sign of God’s grace: the Bible together with the bread and the wine.
-Robert Webber, Worship Is a Verb: Celebrating God’s Mighty Deeds of Salvation, Second Edition (Peabody, MA: Hendrickson Publishers, 1996), 66-67.