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In the Roman Catholic church, a box placed usually behind the altar and containing the consecrated bread and wine for use during the Mass.
The four letters making up the Hebrew name for God (YHWH). In Judaism, the word was never spoken aloud, due to deep reverence for God and the Hebrew word Adonai ('Lord') was often used instead.
The Roman Catholic belief that the bread and wine, once consecrated, change completely into the body and blood of Christ. See also Consubstantiation. Proclaimed as a dogma by the Council of Trent (1545-1563).
The word Trinity literally means 'tri-unity'. Orthodox Christian belief is that God is one substance, but has three equal, eternal and co-existant persons: God the Father, God the Son and God the Holy Spirit.