Jesus Christ is Lord God of heaven and earth who is Father, Son and Holy Spirit. His soul is the Father, His Divine Human, the Son and his action or proceeding, the Holy Spirit. He is infinite in His glorification. Conjunction with finite beings such as ourselves takes place via the Holy Spirit.
Proof? We are created in His image and likeness -- if you look in the mirror, so you see three? The three person trinity was created from the mindset of Christ as he was crucified on the cross.
You wrote, “I reject the whole ‘persons’ thing introduced at the Council of Nicea.”
This statement makes you a heretical christian, but I’m sure you are already aware of that.