17. In how many ways is the Person of the Holy Spirit indicated?

D. In how many ways is the Person of the Holy Spirit indicated? M. Primarily, in one, as is read, "Go, baptize all nations in the name of the Father, and of the Son, and of the Holy Spirit" (Mt 28:19). And again, "For you are the temple of the Holy Spirit" (1 Cor 6:19). But secondarily, even from the grace which he bestows, which even itself is likewise called the Holy Spirit, e.g., "The Holy Spirit will come upon you" (Lk 1:35). And, "Receive the Holy Spirit" (Jn 20:22).

[2] Likewise, too, from these things by which is indicated divine essence, or operation, or comparison to creatures, just as we said also about the Son. But, too, the Person of the Father and of the Son indicates the Holy Spirit secondarily, because whatever we state is theirs we understand secondarily that it also indicates the Person of the Holy Spirit, either as a coworker or as one who has the same substance.