On the Holy Spirit

…an extreme Arian thinker, and On the Holy Spirit expounds the deity of the Holy Spirit implied in the church’s tradition, though not previously formally defined.

…of Caesarea, in his treatise On the Holy Spirit, defended the same view and then deployed theological arguments to show that the three persons of the Trinity properly received equal praise and adoration in the church’s liturgy. The Council of Constantinople (381) could expand the creedal formulation to declare belief…