Not that I care much about "the truth" being in the pages of the Bible, but here's an interesting thought.
If the writer of John 1:1 INTENDED to convey the idea that the pre-human Jesus was "a god" and not "the God", then he was henotheist or polytheist. I don't believe that is the case, being that the author of the gospel of John wrote it very late into the christianity game, I am very inclined to believe he wrote it with the intention of elevating Jesus to Almighty God status, because, well, that was the growing trend that would eventually trump over the other ideas about who Jesus was.
That aside, henotheism (the belief that there are many deities in the spiritual realm, but only one rules supreme or is worthy of human worship) isn't new in the Scriptures. Despite all later scribal redacting, the traces of a pre-babylonian exile henotheistic jewish society are still there to be read in passages of the Old Testament. Examples?
Psalm 82:1 - "God has taken his place in the divine council; in the midst of the gods he holds judgment"
Psalm 89:5-7 "5 Let the heavens praise your wonders, O Yahweh, your faithfulness in the assembly of the holy ones! 6 For who in the skies can be compared to Yahweh? Who among the gods is like Yahweh,7 a God greatly to be feared in the council of the holy ones, and awesome above all who are around him?"
Genesis 31:51 - Here Jakob and Laban clearly are swearing by different deities.
Deuteronomy 5:6, 7 - About the first commandment, notes Nicholas F. Gier, professor emeritus of Idaho University: "Contrary to popular understanding, the First Commandment, "You shall have no other gods before me," does not deny the existence of other deities. In his commentary on Deuteronomy Anthony Phillips maintains that "there is here no thought of monotheism. The commandment does not seek to repudiate the existence of other gods, but to prevent Israel from having anything to do with them."
Also Deuteronomy 32:8, if we follow the pre-massoretic texts, indicates that Yahweh himself has allocated the nations of the earth (see Genesis chapter 10) to different deities, while keeping Israel as his special property.
The whole story about Israel being the first monotheistic society is flat wrong. It was polytheistic, then henotheistic, and only after the babylonian exile became monotheistic, and then redacted all its ancient texts to make it look as though its past has always been about worshipping solely Yahweh. It wasn't like that, at all.