I'm no theologian but I don't really think this coheres with standard Catholic doctrine. Typically, we say that God is being itself, pure and uncaused. All things maintain their very existence through God. We know that God has intellect because the world we reside in is intelligible. God has no need to experience change or time because he actualizes their very existence, and in order to do so, must already have perfect knowledge of it. Humans, even our souls, are created beings and are not any more a part of God than anything else that exists. Jesus was unique in that he was a hypostatic union of human nature and divine nature, and even though he was an indivisible union, these natures nevertheless remained distinct.

Edit: I wrote this response before you added that this was specific to the theology of John Scotus Eriugena.