... God, then, sheds forth of the Spirit, and the love of God is also shed abroad through the Spirit; in which point we ought to recognize the unity of the operation and of the grace. For as God shed forth of the Holy Spirit, so also “the love of God is shed abroad in our hearts through the Holy Spirit” Romans 5:5, in order that we may understand that the Holy Spirit is not a work, Who is the dispenser and plenteous Fount of the divine love.
In like manner that you may believe that that which is shed abroad cannot be common to the creatures but peculiar to the Godhead, the Name of the Son is also poured forth, as you read: “Thy Name is as ointment poured forth.” Of which saying nothing can surpass the force. For as ointment closed up in a vase keeps in its perfume, so long as it is confined in the narrow space of that vase, though it cannot reach many, it yet preserves its strength. But when the ointment has been poured out of that vase wherein it was enclosed, it spreads far and wide; so, too, the Name of Christ before His coming amongst the people of Israel was enclosed in the minds of the Jews as in some vase. For “God is known in Judah, His Name is great in Israel;” that is, the Name which the vases of the Jews held confined in their narrow limits.
Even then that Name was indeed great, when it remained in the narrow limits of the weak and few, but it had not yet poured forth its greatness throughout the hearts of the Gentiles, and to the ends of the whole world. But after that He by His coming had shone throughout the whole world, He spread abroad that divine Name of His throughout all creatures, not filled up by any addition (for fullness admits no increase), but filling up the empty spaces, that His Name might be wonderful in all the world. The pouring forth, then, of His Name signifies a kind of abundant exuberance of graces and copiousness of heavenly goods, for whatever is poured forth flows over from abundance.
On the Holy Spirit, Book I .