In various places Hasker says the Persons are constituted by the divine mind/soul, the concrete divine nature (a trope of divinity), and a single mental substance.

Daniel Howard-Snyder objects that Hasker’s talk of the nature “supporting” or “sustaining” the lives or “life-streams” of the Persons is unintelligible (2015b, 108–10). He also argues that it is unclear quite what constitutes the Persons, as in various places Hasker says that this is the divine mind/soul, the concrete divine nature (a trope of divinity), and a single mental substance–and these would appear to be different claims (110). Also, monotheism uncontroversially implies that there is exactly one god. But Hasker forbids saying that any of the Persons is a god. And by definition being a ...