II. Rules for understanding the sacrament definition (1–3)
II. These rules help understand the definition. 1. Divine institution alone makes a Sacrament; remove it and the sacrament is removed, change it and it is changed. In the essentials of a sacrament, nothing is to be changed
2. Though sacraments are signs, they are not empty signs, but exhibitive of the thing signified—namely spiritual grace—as veiled under them.
3. Sacramental union is not essential-natural but mystical, not feigned but true and real: the closest conjunction of earthly and heavenly thing, so that in lawful use, when one is named and exhibited, the other is truly exhibited to the believer according to the promise's formula.
Latin
II. Ad sacramenti definitionem rectius intelligendam observandae sunt hae regulae. 1. Sola divina institutio Sacramentum efficit, qua sublata tollitur & mutata mutatur. IN SUBSTANTIALIBUS SACRAMENTI NIHIL MUTANDUM EST. 2. Etiamsi sacramenta sint signa, tamen non sunt vacua signa, sed rei signatae, gratiae nimirum spiritualis, tanquam ad ea velate exhibitiva. 3. Unio sacramentalis non est essentialis naturalis, sed mystica, non ficta sed vera & realis, coniunctio rei terrenae & caelestis arctissima, qua fit ut in legitimo usu una earum dicta & exhibita una vere etiam secundum formulam promissionis credenti exhibeatur altera.