The sacrament par excellence, the Eucharist, has been upheld as the foundational sacrament of Christ's Body called Church, yet it has confounded Christian thinking and practice throughout history. Its symbolism points to the paradox of the incarnation, death, and resurrection of God in Jesus of Nazareth, which St. Paul describes as a stumbling-block (skandalon). Yet the scandal of sacramentality, not only illustrated by but enacted in the Eucharist, has not been sufficiently accounted for in the ecclesiologies and sacramental theologies of the Christian tradition. Despite what appears to be...