John Mark Hicks, Come to the Table: Revisioning the Lord’s Supper , explores themes of the Eucharist in such a fresh manner.
The Table of the Lord visibly — visibly, concretely, physically, really — expresses the unity of the Body of Christ.
Union with Christ is the sole factor that invites a person and that qualifies a person. 
Union with Christ also is the sole qualification for you or for me to accept another at the Table. 
Union with Christ leads to communion with one another. It is not our intimacy or friendship or even interpersonal fellowship with one another that determines who can come to the Table. It is the Lord’s decision, not ours. If Christ accepts a person, we accept that person.
This happens physically, concretely, and visibly — at the Table.
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