The Family of God is located both in heaven and on earth. In heaven there are two Beings of spirit who are part of the God Family. This flies right in the face of the concept of strict monotheism! But even more startling is that God considers true Christians to be part of the God Family already!
Currently two members of the Godhead are spirit. But God—Elohim—said, "Let Us create man in Our image" (Genesis 1:26), and what is evident from the beginning of the Bible all the way to the end is that Elohim is expanding! God is increasing what Elohim is. God is increasing the number of those who are in the God Family. This is not hard to understand. Now we are already children of God. We are in His Family.
To us, monotheism indicates that one is worshipping one distinct and unique almighty personality, and if anyone claims anything more than that, that person is considered to be a polytheist—worshipping many gods. This is hard to accept here in this Western world, and this resistance to accepting what the Bible clearly reveals about the God Family has in large measure led to the introduction of the "Trinity." People just cannot accept the simple truth of the Bible, that God is expanding. He is increasing His number. We will be part of that God Family.
John W. Ritenbaugh
The Nature of God: Elohim