73. Therefore, beloved brethren, in declaring that the Son is like in all things to the Father, we declare nothing else than that He is equal. Likeness means perfect equality, and this fact we may gather from the Holy Scriptures, And Adam lived two hundred and thirty years, and begat a son according to his own image and according to his own likeness; and called his name Seth42 Gen. v. 3.. I ask what was the nature of his likeness and image which Adam begot in Seth? Remove bodily infirmities, remove the first stage of conception, remove birth-pangs, and every kind of human need. I ask whether this likeness which exists in Seth differs in nature from the author of his being, or whether there was in each an essence of a different kind, so that Seth had not at his birth the natural essence of Adam? Nay, he had a likeness to Adam, even though we deny it, for his nature was not different. This likeness of nature in Seth was not due to a nature of a different kind, since Seth was begotten from only one father, so we see that a likeness of nature renders things equal because this likeness betokens an exactly similar essence. Therefore every son by virtue of his natural birth is the equal of his father, in that he has a natural likeness to him. And with regard to the nature of the Father and the Son the blessed John teaches the very likeness which Moses says existed between Seth and Adam, a likeness which is this equality of nature. He says, Therefore the Jews sought the more to kill Him, because He not only had broken the Sabbath, but said also that God was His father, making Himself equal with God43 John v. 18.. Why do we allow minds that are dulled with the weight of sin to interfere with the doctrines and sayings of such holy men, and impiously match our rash though sluggish senses against their impregnable assertions? According to Moses, Seth is the likeness of Adam, according to John, the Son is equal to the Father, yet we seek to find a third impossible something between the Father and the Son. He is like the Father, He is the Son of the Father, He is born of Him: this fact alone justifies the assertion that they are one.
73. Aequalitatem perfectam significat similitudo naturae. Quod Moysi similitudo, id Joanni aequalitas.---0528A Praedicantes itaque, Fratres charissimi, similem Filium in omnibus Patri, nihil aliud quam aequalem praedicamus. Perfectae aequalitatis significantiam habet similitudo: et hoc ex sanctis Scripturis intelligendum est. 503 Legimus namque: Vixit autem Adam ducentis triginta annis, et genuit secundum effigiem suam et secundum similitudinem suam, et cognominavit nomen ejus Seth (Gen. V, 3). Quaero cujusmodi similitudinem et effigiem suam Adam in Seth genuerit. Tolle corporum infirmitates, tolle conceptus initium, tolle dolores partitudinis, et omnem humanam necessitatem: quaero similitudo haec, quae in Seth est, utrum per naturam dissentiat auctori, aut utrum alterius generis essentia fuerit in utroque, ne non naturalem habuerit Adae Seth natus essentiam. Sed 0528B similitudo Adae est, etiamsi negemus; quia non est natura dissimilis. Similitudo autem naturae non habuit in Seth alterius generis naturam, quia non aliunde Seth natus est: ita similitudo res ipsas naturalis coaequat, per similitudinem non indifferentis essentiae. Omnis itaque filius, secundum naturalem nativitatem, aequalitas patris est; quia est et similitudo naturae. Et beatus Joannes docet in natura Patris et Filii, quam Moyses in Seth et Adam similitudinem dicit, hanc eamdem aequalitatem esse naturae, ait enim: Propter hoc eum magis quaerebant Judaei interficere, quoniam non solum solvebat sabbatum, sed et patrem suum dicebat Deum, aequalem se faciens Deo (Joan. V, 18). Quid tantorum virorum doctrinis atque dictis inserimus torpentia peccatis 0528C gravibus ingenia, et sensus hebetes atque temerarios adversum indissolubiles praedicationes impii fatigamus? Per Moysen Seth Adae similitudo est, per Joannem Filius Patri aequalis est: et quaerimus tertium nescio quid inter Patrem et Filium, quod natura non recipit. Similis est Patri, filius Patris est, ex eo natus est: per hoc solum pie potest quod unum sint praedicari.