Let's take a look at one recurring theme in the story of religion, that being the things that can be done spiritually with bread and wine.
One I am sure you have heard of, but the Christian Communion/Mass has many predecessors, and predecessors by thousands of years. Passover begins by breaking bread and finishes with a cup of wine. But even before that there is the story of the patriarch Abram (who became Abraham) who led a military expedition to rescue his nephew Lot. When he returned in victory, he was met by a priest named Melchizidek who brrought bread and wine. Melchizidek was a priest in the manner of many priests today, that being that he was a priest who had a "day job" (as King of Salem).
Bread and wine can be used at many levels, including a version which many Wiccans enjoy.
