Man and Sin by Piet Schoonenberg (1964) 1.7AP
[Consider a god that appears as a single entity but without personhood. This God is a monad. It belongs to the category of firstness. Monads belong realm of possibility. Even though this god may be labeled with a name, this god should not be designated as a person, because this god is the ground for recognition. The ground belongs to the realm of possibility.
This monadic god is pure mystery. This monadic god may be full of contradictions, because contradictions may coexist in the realm of possibility. There is no need for logical coherence. Classical reasoning cannot apply to this god, since classical reasoning concerns the realm of actuality. Classical reasoning rules out contradictions.
Consequently, the label of “One God” may be attached to the Realm of Possibility, because there is no way to establish that there is more than one god. The sea of possibility is monadic. However, “this One God” cannot be called “True” simply because, somewhere else within the monadic sea of possibility, there lurks “the One False God”.]