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definition is preparation and precautionary defense. Paul uses this in Romans 1, verses 2, 3, and 4. For, being about to speak of the Gospel of God and its entire subject matter, he briefly predesigns what it is or what kind it is with these words: original: "Quod (Euangelium) ante promiferat Deus per Prophetas fuos in fcripturis sanctis, De filio suo facto ex femine Dauidis fecundum carnem, Declarato Filio Dei per potentiam, fecundum spiritum sanctificationis, per resurrectione à mortuis." Which (Gospel) God had promised beforehand through His prophets in the holy scriptures, concerning His Son, who was made of the seed of David according to the flesh, and declared the Son of God with power, according to the spirit of sanctification, by the resurrection from the dead. The same Paul, in his Epistle to the Colossians, being about to speak of the dignity of Christ and His eminence above all creatures, first proposes this πρωτοτοκοῦ firstborn in chapter 1, verse 15, with these words: original: "Qui est imago Dei inconspicui, primogenitus omnis creaturæ." Who is the image of the invisible God, the firstborn of every creature. Therefore, having these places of Sacred Scripture in hand, I indicate in the first place: This passage or verse is an ορισμός definition.
An ορισμός definition is a brief description and explanation of the nature of a thing, which is usually derived either from the very essence of the thing, or from its properties and effects, or from its adjuncts. Thus Paul, in Galatians 3, verse 24: The law is a schoolmaster unto Christ. In the Epistle to the Ephesians 4, verse 24: What is the new man? He who is created according to God in righteousness and true holiness. But because this topic also pertains to the dialecticians, by whom it is abundantly treated, it will be touched upon more briefly by us here.
Αἰτιολογία rendering of cause is the brief confirmation of a statement that has preceded, justly relying on an argument. This occurs for the most part in Sacred Scripture. Paul, Galatians 3, verse 18: For if the inheritance be of the law, it is no more of promise. This is an αἰτιολογία rendering of cause derived from contraries; for reward and grace are things mutually contrary, not merely diverse or opposed, as the same Paul teaches in Romans 11, verse 6.