For the record, the rabbis have always understood the Sh'khinah, the Divine Presence, and the Holy Spirit to be simultaneously of God and sent from God. They teach that the Torah is God's wisdom (thus, an attribute of the Holy One rather than a creation) which was with Him in the beginning and which He used to create the universe. The Talmud and other rabbinic sources frequently portray conversations between the Holy One and the Sh'khinah, or the Holy One and the Torah. And yet we still affirm, HaShem Echad.
Your "polytheism" charge betrays an ignorance of Christianity's Jewish roots. It also betrays a lack of understanding in Scripture. The Glory (Kevod) of God filled the Holy Place from the days of Moses to the days of Ezekiel. Does that mean that God was not on His throne in Heaven?
Shalom.
I'm not in any disagreement there.
As I would understand it, God is spirit and God is holy. God is THE Holy Spirit and that which eminates from him is holy spirit. (and yes, I believe in unholy spirit)
The Glory (Kevod) of God filled the Holy Place from the days of Moses to the days of Ezekiel. Does that mean that God was not on His throne in Heaven?
No more than JEHOVAH-JIREH, JEHOVAH-NISSI, or JEHOVAH-SHALOM, etc. demonstrate a pluralistic JEHOVAH.
The old testament is clear...hear o isreal the lord thy God is one God.