7. The Father, the Son and the Holy Ghost alike hallow, quicken, enlighten, and comfort. No one will attribute a special and peculiar operation of hallowing to the operation of the Spirit, after hearing the Saviour in the Gospel saying to the Father about His disciples, sanctify them in Thy name. [2659] In like manner all other operations are equally performed, in all who are worthy of them, by the Father and by the Son and by the Holy Ghost; every grace and virtue, guidance, life, consolation, change into the immortal, the passage into freedom and all other good things which come down to man. Nay even the dispensation which is above us in relation to the creature considered both in regard to intelligence and sense, if indeed it is possible for any conjecture concerning what lies above us to be formed from what we know, is not constituted apart from the operation and power of the Holy Ghost, every individual sharing His help in proportion to the dignity and need of each. Truly the ordering and administration of beings above our nature is obscure to our perception; nevertheless any one, arguing from what is known to us, would find it more reasonable to conclude that the power of the Spirit operates even in those beings, than that He is excluded from the government of supramundane things. So to assert is to advance a blasphemy bare and unsupported; it is to support absurdity on fallacy. On the other hand to agree that even the world beyond us is governed by the power of the Spirit, as well as by that of the Father and of the Son, is to advance a contention, supported on the plain testimony of what is seen in human life. Identity of operation in the case of Father and of Son and of Holy Ghost clearly proves invariability of nature. It follows that, even if the name of Godhead does signify nature, the community of essence proves that this title is very properly applied to the Holy Spirit.
8. I am, however, at a loss to understand how our opponents with all their ingenuity can adduce the title of Godhead in proof of nature, as though they had never heard from Scripture that nature does not result from institution and appointment. [2660] Moses was made [2661] a god of the Egyptians when the divine voice said, "See I have made thee a god to Pharaoh. [2662] The title therefore does give proof of a certain authority of oversight or of action. The divine nature, on the other hand, in all the words which are contrived, remains always inexplicable, as I always teach. We have learnt that it is beneficent, judicial, righteous, good, and so on; and so have been taught differences of operations. But we are, nevertheless, unable to understand the nature of the operator through our idea of the operations. Let any one give an account of each one of these names, and of the actual nature to which they are applied, and it will be found that the definition will not in both cases be the same. And where the definition is not identical the nature is different. There is, then, a distinction to be observed between the essence, of which no explanatory term has yet been discovered, and the meaning of the names applied to it in reference to some operation or dignity. That there should be no difference in the operations we infer from the community of terms. But, we derive no clear proof of variation in nature, because, as has been said, identity of operations indicates community of nature. If then Godhead be the name of an operation, we say that the Godhead is one, as there is one operation of Father, Son, and Holy Ghost; if, however, as is popularly supposed, the name of Godhead indicates nature, then, since we find no variation in the nature, we reasonably define the Holy Trinity to be of one Godhead.
[2651] Placed in 374 or the beginning of 375.
[2652] cf. Letter cli. This doctrinal statement is also found among the works of Gregory of Nyssa; but is more probably to be attributed to Basil. Vide Tillem. Mém. Ecc. ix. 678.
[2653] Col. ii. 9.
[2654] Rom. i. 20.
[2655] Jer. x. 11, LXX.
[2656] Ps. xcvi. 5.
[2657] 1 Sam. xxviii. 13.
[2658] Num. xxii. 20. Contrast Bp. Butler, Serm. vii.
[2659] cf. St. John xvii. 11 and 17.
[2660] cheirotonete.
[2661] echeirotonethe.
[2662] Ex. vii. 1.