Excellent article. Thank you. When I read this particular paragraph, I got this kind of "brain zap", so to speak. I think it was a very good way to explain how the "being" of God is infinite in that it is present in all the dimensions we know about. As we are body, soul, spirit - and made in the image of God - so Almighty God is also existent in these forms and experiences all because he is present in all. I don't claim to be a scholar, I know, it shows!
Our finite minds are quite feeble when it comes to understanding the Trinity. I think that’s why I liked the title of this. “Mystery” of the Trinity”