The economy of salvation reveals a certain 'order' (taxis) of the hypostases, but the theology affirms that only a full equality of substance between each Person will safeguard against slipping into ontological subordinationism.
Gregory goes on to affirm that any ideas about cause that produce subordination of any sort are inadmissible because of the homoousios.
Basil produced a doctrine of God as a single ousia with three dlstiinct sets of recognizable properties or peculiarities each set formmg an authentically existing hypostasis, the whole bound together Inseparably in a common ousia or nature, no hypostasis being subordinate to or less than the others, but the Second and Third deriving from the First as their source or ultimate principle.
There is no longer any suggestion that God is one simply by reason of the fact that the Second and Third Persons may in the last resort be resolved back into the First Person, since they derive their origin from him. The fact that now comes to be emphasised is that the Father is manifested in the Son and in the Holy Spirit wholly and without detraction. The Three Persons no longer lead back to a unity that is primarily found in one Person: they are in a real sense one in themselves.