Is each person of Trinity necessary?

[Wesrock]

You also left my other question without answer: Does Son also have knowledge of Himself? Who is this knowledge? How about Holy Spirit?

The Son isn’t a separate being or a separate mind or a separate part. When we approach the Trinity at a high level, it’s recognizing real relational processions in God, and it’s only the relationships which are really distinct. There is a paternity and a filiation. You ask if the Son knows himself. Consider that, what do we have relationally there? “Another” paternity and “another” filiation. But this second paternity has no distinction from the first paternity, it’s the same procession. It’s the same relation. So there is only truly one paternity. And the second filiation has no distinction (even relational) from the first filiation, it’s the same procession. It’s the same relation. So there is only truly on filiation.