Before I submit the question I would like to preface with the fact that I am a Christian, though I do not hold the doctrine of the trinity as I see this to be a post New Testament thought sprung from a mixture of Greek philosophy and pagan beliefs. I don't wish to address that, but I am simply using it to show the angle I am approaching this question from.
If this question is of the wrong format please let me know what to do to improve it, but I'm looking for some knowledgeable input from (I assume) Jewish people. The initial question is more rhetorical to establish the context of the three bullet points.
Also I am not familiar with the day to day traditions of the Jewish people, so if something in this post is disrespectful to that, please brush it off as ignorance and accept my express apology.
My question is.
Given the STRICT monotheistic nature of the Jewish religion (Deut 6:4), and with the Old Testament scripture as the foundation of the New Testament, how do we see this development brought forth while still "maintaining" the idea of being monotheistic?
It seems like an odd departure from the ideas established in the OT.
There are a few subjects regarding this question that I feel would be valuable to address.
- What was the Hebrew understanding of the Holy Ghost in the OT? And how could this result in a co equality of persons in the one God?
We see countless times in the OT that the Spirit of the Lord was upon a prophet, and that the Spirit of the Lord was acting in a particular way or doing a particular. Also, NT Jews (namely, Mary and the disciples of John) did not appear to be shocked when they heard of this Holy Ghost. It seems had this been addressing another person in God they would be a little confused upon hearing this, but it instead they are not shocked at all as if they knew it was simply a way of addressing God in a role of interaction with humanity.
- What was the Hebrew understanding of the Messiah in the OT? And how could this result in a co equality of persons in the one God?
Without predication, the OT displays that the messiah who is to be born will be called, among other things; Immanual, Wonderful Consoler, Mighty God, Everlasting Father, and Prince of Peace. Holding the view that Jesus is God, it seems a far leap to say this person was co-eternal and co-existent with God the Father through all eternity rather than Jesus simply being another way God revealed himself to humanity, just this time as a genuine human. e.g. The burning bush, the glory that was revealed to Moses in Exodus 33, the angel to Jacob, the men to Abraham, and so on.
- Is there any hint of a singular, tri personal Jehovah found in the OT?
People like to reference Genesis 1:26 as a reference to plurality in God.
People reference the plural nature of Elohim as referencing multiple persons in God (although if taken at face value, the word would mean God's, which is a belief I doubt anyone from the trinitarian faith would intentionally profess.)
People like to reference the compound nature of achad as a reference to a plurality of persons. (although from this arises the same issue as the above mention)
Again, I hope this question(s) is in a format acceptable, and I hope to gleam some good information about the Jewish understanding of God's nature.