1 John 4:13

31. As, then, we call the only Word of God specially by the name of Wisdom, although universally both the Holy Spirit and the Father Himself is wisdom; so the Holy Spirit is specially called by the name of Love, although universally both the Father and the Son are love. But the Word of God, i.e. the only-begotten Son of God, is expressly called the Wisdom of God by the mouth of the apostle, where he says, “Christ the power of God, and the wisdom of God.” But where the Holy Spirit is called Love, is to be found by careful scrutiny of the language of John the apostle, who, after saying, “Beloved, let us love one another, for love is of God,” has gone on to say, “And every one that loveth is born of God, and knoweth God. He that loveth not, knoweth not God; for God is love.” Here, manifestly, he has called that love God, which he said was of God; therefore God of God is love. …

12. “No man hath seen God at any time.” See, beloved: “If we love one another, God will dwell in us, and His love will be perfected in us.” Begin to love; thou shalt be perfected. Hast thou begun to love? God has begun to dwell in thee: love Him that has begun to dwell in thee, that by more perfect indwelling He may make thee perfect. “In this we know that we dwell in Him and He in us, because He hath given us of His Spirit.” It is well: thanks be to God! We come to know that He dwelleth in us. And whence come we to know this very thing, to wit, that we do know that He dwelleth in us? Because John himself has said this: “Because He hath given us of His Spirit.” Whence know we that He hath given us of His Spirit? This very thing, that He hath given thee of His Spirit, whence comest thou to know it? Ask thine own bowels: if they are full of charity, thou hast the Spirit of God. …

24. We then, by way of giving a rude view of the expressions in this passage, have been led into many words, but blessed John will shew from his Epistle the sense of the words, concisely and much more perfectly than we can. And he will both disprove the interpretation of these irreligious men, and will teach how we become in God and God in us; and how again we become One in Him, and how far the Son differs in nature from us, and will stop the Arians from any longer thinking that they shall be as the Son, lest they hear it said to them, ‘Thou art a man and not God,’ and ‘Stretch not thyself, being poor, beside a rich man.’ John then thus writes; ‘Hereby know we that we dwell in Him and He in us, because He hath given us of His Spirit.’ Therefore because of the grace of the Spirit which has been given to us, in Him we come to be, and He in us; and since it is the Spirit of God, therefore t …

29. It is mere trifling to quote the passage:“Know ye not that your bodies are a temple of the Holy Ghost,” for it is customary in Holy Scripture to speak of a single object as though it were many, and of many as though they were one. And Jovinianus himself should know that even in a temple there are many divisions, the outer and the inner courts, the vestibules, the holy place, and the Holy of Holies. There are also in a temple kitchens, pantries, oil-cellars, and cupboards for the vessels. And so in the temple of our body there are different degrees of merit. God does not dwell in all alike, nor does He impart Himself to all in the same degree. A portion of the spirit of Moses was taken and given to the seventy elders. …

95. In like manner that you may recognize the Unity, it is also said of the Spirit: “For he that soweth in the Spirit shall of the Spirit reap eternal life.” And John says: “Hereby we know that He is in us because He hath given us of His Spirit.” And the Angel says: “That Which shall be born of her is of the Holy Spirit.” And the Lord says: “That which is born of the Spirit is Spirit.”