De misteriis sacramenti eucharistie, quorum notitia fideles excitat et inflammat ad fervorem et devotionem. De ipso itaque sacramento venerabili tria mysteria erunt a nobis declaranda: Primum dicitur institutionis: qualiter Christus instituit sacramentum eucharistie in cena et ordinavit apostolos sacerdotes; et quare hoc sacramentum conficitur in spetie (i.e. specie) panis et vini et sub duplici spetie; et an sub utraque debeat sumi. Secundum figurationis: de figuris que precesserunt sacramentum eucharistie et de septem proptietatibus manne appropriatis huic sacramento. Tertium fructificationis: de septem fructibus quos acquirunt hi qui fideliter et devote sanctam communionem suscipiunt.

On the mysteries of the sacrament of the Eucharist, the knowledge of which excite and inflame the believers to fervour and devotion. About this sacred sacrament, we shall clarify three mysteries:  The first concerns establishment: how Christ established the sacrament of the Eucharist during Supper and ordained the Apostles priests; and how this sacrament fullifills itself in the dual shape of bread and wine; and if we have to consume both.  The second concerns prefiguration: the figures that foreshadowed the sacrament of the Eucharist and the seven qualities of Manna in relation to this sacrament.  The third regards fruitfulness: on the seven fruits gained by those who faithfully and devotedly take the Holy Communion.

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