45. The above opinion, although meant to teach the immutability of God, yet prepared the way for the following heresy. Some have ventured to say that the Unborn God by expansion of His substance extended Himself as far as the holy Virgin, in order that this extension produced by the increase of His nature and assuming manhood might be called Son. They denied that the Son who is perfect God born before time began was the same as He who was afterwards born as Man. Therefore the Catholic Faith condemns all denial of the immutability of the Father and of the birth of the Son.
VIII. “If any man says that the Son is the internal or uttered Word of God: let him be anathema.”
45. Superior sententia, etsi indemutabilem Deum docere voluerit, ad hanc se tamen sequentem haeresim praeparavit. Quidam enim ausi sunt innascibilem 0514D Deum usque ad sanctam Virginem substantiae dilatatione protendere (Vid. lib. I de Trinit. n. 16 et lib. X, n. 50): ut latitudo deducta quodam naturae suae tractu assumensque hominem filius nuncuparetur; 0515A neque Filius ante saecula perfectus Deus natus, idem postea et homo natus sit. Totum hoc itaque catholica fides damnat, in quo et demutabilis Pater dicitur, et natus Filius abnegatur.
VIII. «Si quis insitum et prolativum verbum Dei filium dicat: anathema sit.»