Romans 15:16

34. I think that you cannot fail to understand this too, that the word “father” is but a single term indeed, and yet one admitting of being understood in various ways. For one is called father, as being the parent of those children whom he has begotten in a natural way; another is called father, as being the guardian of children whom he has but brought up; and some, again, are called fathers in respect of the privileged standing accruing through time or age. Hence our Lord Jesus Christ Himself is said to have a variety of fathers: for David was called His father, and Joseph was reckoned to be His father, while neither of these two was His father in respect of the actuality of nature. …

48. What can be said in opposition to this evidence, and this expression of things both foretold and fulfilled? If they suppose that His disciples have given a false testimony on the subject of the divinity of Christ, will they also doubt the passion of Christ? No: they are not accustomed to believe that He rose from the dead; but, at the same time, they are quite ready to believe that He suffered all that men are wont to suffer, because they wish Him to be held to be a man and nothing more. …

But let no one consider this an undertaking beside the purpose, nor a search of this kind a piece of superfluous curiosity; for the date of the Epistles contributes no little to what we are looking after. For when I see him writing to the Romans and to the Colossians about the same subjects, and yet not in a like way about the same subjects; but to the former with much condescension, as when he says, “Him that is weak in the faith receive ye, but not to doubtful disputations; for one believeth that he may eat all things, another, herbs” ( Rom. xiv. …

Ver. 16 . “That I should be the minister of Jesus Christ to the Gentiles, ministering (ἱερουργοὕντα) the Gospel of God.” For after his abundant proof of his statements, he draws his discourse to a more lofty tone, not speaking of mere service, as in the beginning, but of service and priestly ministering ( λειτουργίαν καί ὶερουργίαν ). For to me this is a priesthood, this preaching and declaring. This is the sacrifice I bring. Now no one will find fault with a priest, for being anxious to offer the sacrifice without blemish. And he says this at once to elevate ( πτερὥν ) their thoughts, and show them that they are a sacrifice, and in apology for his own part in the matter, because he was appointed to this office. For my knife, he says, is the Gospel, the word of the preaching. …

IX. The Holy Ghost, then, always existed, and exists, and always will exist. He neither had a beginning, nor will He have an end; but He was everlastingly ranged with and numbered with the Father and the Son. For it was not ever fitting that either the Son should be wanting to the Father, or the Spirit to the Son. For then Deity would be shorn of Its Glory in its greatest respect, for It would seem to have arrived at the consummation of perfection as if by an afterthought. …

2. But since the question now raised by those who are always endeavouring to introduce novelties, but passed over in silence by the men of old, because the doctrine was never gainsaid, has remained without full explanation (I mean that which concerns the Holy Ghost) I will add a statement on this subject in conformity with the sense of Scripture. As we were baptized, so we profess our belief. As we profess our belief, so also we offer praise. As then baptism has been given us by the Saviour, in the name of the Father and of the Son and of the Holy Ghost, so, in accordance with our baptism, we make the confession of the creed, and our doxology in accordance with our creed. We glorify the Holy Ghost together with the Father and the Son, from the conviction that He is not separated from the Divine Nature; for that which is foreign by nature does not share in the same honors. …