I suppose one of the key things separating what I, and many others believe, is that there is only One God. There are not three separate people who make up God, there is only One God who has revealed Himself in three offices. This affects water baptism especially. It might be best if I share with you first so that you can see if you want to continue our relationship.
In Isaiah 43 v10-11 we have this statement.
10 Ye are my witnesses, saith the Lord, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me. 11 I, even I, am the Lord; and beside me there is no saviour.
OK, there is only one God and He is the saviour. Jesus Christ cannot be anyone else but God Himself, but in a different form. In fact Jesus Christ is the name we are given for God revealed. God cannot be seen, He is eternal. So He reveals Himself as a pillar of cloud, a pillar of fire int eh burning bah and that same pillar of fire on the dado to Damascus. He is the still small voice, he is Melchisedec, He is a man that appeared to Abraham on the plains of Mamre He was born in a stable, He was a voice from Heaven, He was a dove descending. He can be in all places at the same time. But He represents Himself as Jesus Christ.
Genesis 1 v1 says that in the beginning God created the heaven and the earth. John 1 v1 says in the beginning was the Word and the Word was with God and the Word was God. God is eternal in the heavens. He is all in all. How can He express His attribute, His saving Grace, His love, His redemptive healing power and much more unless He expresses Himself out side of eternity? So God spoke, and those words are Jesus Christ, the expression of the eternal God.
Now a Word is a thought expressed. The Word is the same as the original thought, it is an expression, a tangible and communicative projection of an concept through sound or writing. In that case a Word is the son of the thought. Thought came first and the Word simply expresses or makes real that thought.
And that is Jesus Christ. The invisible God in an expressed form.
Colossians 2 v-9 says, "In Him (Christ) dwelt the fulness of the godhead bodily. Jesus told His disciples that when they saw Him they saw the Father. Philip said, show us the father and that is sufficient for us. Jesus responded, Have i been so long with you Philip and still you don't know me? (John 14 v7-9)
Everything that God was was lured into Jesus Christ. All that Jesus Christ is God wants to pour into His church.
There is no other person, no other God. The eternal God has expressed Himself as the Word made flesh and when the life that was in that word was put to death on the cross it returned as the pillar of fire not the 120 believers at Pentecost. The life that was in Christ, the life that came from eternity, is now in His people.