You're using extra-biblical sources from which to make your claims.
No credibility there.
The Old Testament is "extra Biblical"? Then you have a FALSE bible!
These passages are from God's Infallible, Inerrant, Inspired Word:
But, in Job 35:10, it is very interesting, “But none says, ‘Where is God my Maker, who gives songs in the night”. Here “God” is “˒ĕlōah”, masculine, singular; and “Maker”, “‘ō·śāy”, masculine, plural, literally, “God my Makers”. Again, why the singular “˒ĕlōah”, with the plural, “‘ō·śāy”? It is clear from this, that “˒ĕlōah”, is used to show the “Essential Unity”; and “‘ō·śāy”, for the “Plurality of Persons”. There is not other explanation for this. We should have expected, the singular “‘ō·śê·nî”.
This is also seen in Isaiah 54:5, “For your Maker (‘ō·śa·yiḵ, plural,
your Makers) is your Husband (ḇō·‘ă·la·yiḵ, plural,
your Husbands), the LORD of Hosts is His Name (šə·mōw, sing); and the Holy One of Israel is your Redeemer, the God of the whole earth he is called”. Why not as in Isaiah 51:13, where we read the singular?
Likewise, in Ecclesiastes 12:1, “Remember also your Creator in the days of your youth”
Here “your Creator”, “bō·wr·’e·ḵā”, is the masculine, plural, “your Creators”. Why the plural?
Genesis 46:3, “Then he said, “I am God (hā·’êl) , the God (ĕ·lō·hê) of your father”
Literally, “I am the God, the Gods”
Exodus 20:5, “You shall not bow down to them or serve them, for I the LORD your God am a jealous God”
“’ā·nō·ḵî Yehôvâh ’ĕ·lō·he·ḵā ’êl qan·nā”, literally, “I Yahweh your Gods God jealous” (also Deuteronomy 4:24, etc)
2 Samuel 22:32, “For who is God (’êl), but the LORD (Yehôvâh)? And who is a Rock, except our God (’ĕ·lō·hê·nū) ?”
“God...Yahweh...Gods”
In Proverbs 9:10, we read, “The fear of the LORD is the beginning of wisdom, and the knowledge of the Holy One is insight”
“the LORD”, “Yehôvâh”, masculine, singular
“the Holy One”, “qə·ḏō·šîm”, masculine, plural, “the Holy Ones”
Proverbs 30:3, “I have not learned wisdom, nor have I knowledge of the Holy One”
“the Holy One”, “qə·ḏō·šîm”, masculine, plural, “the Holy Ones”
Now prove these to be wrong