But mostly it is. Chemosh (in the Judges quote) is the God of his tribe, and 'our God' is the God of the Jewish tribe. The text isn't ambiguous in any way. And as for the bible God being the biggest and the best god (rather than the only god), that's called henotheism.
From the start Yahweh was telling and showing Israel that the other gods were nothing but idols and that Yahweh was the only true God. It seems many or even most in Israel were seduced by the idea of other gods however when they intermarried with the Canaanites.
Grateful if you'll provide the quote. But it won't make all the other quotes go away,
Deuteronomy 4:35,39 — Unto thee it was shown, that thou mightest know that the LORD he is God;
there is none else beside him. (39) Know therefore this day, and consider it in thine heart, that the LORD he is God in heaven above, and upon the earth beneath: there is none else.
Deuteronomy32:39 — See now that I, even I, am he, and
there is no god with me: I kill, and I make alive; I wound, and I heal: neither is there any that can deliver out of my hand.
So your answer is that these quotes were penned a thousand years later and not by Moses.
But your other quoes at the most show that there were other gods around in those days, Chemosh for example, and other gods.
It's strange to think that the writers would write that Yahweh is the only God and then say stuff that showed that there were many more true gods. You have a strange way of interpreting the Bible.
They each devised as many gods of such nature, sex, powers, locales, &c as seemed to them to be required. Yahweh is definitely not the only god around back in those days. And note how the model for Yahweh is Mesopotamian, borrowed by Semitic tribes from the non-Semitic Sumerians ─ Abraham is said to be from Ur, for example, a Sumerian town but with Semitic (Akkadian) neighbors, and the Canaanite tribes and their gods were largely Semitic too.
Contrast the Egyptian model, where gods are realized as animals or the sun, and an elaborate and ritualized concept of an afterlife. Or animism, the idea that not only all living things but caves, mountains, rivers, woods, fields, had a supernatural element. Yahweh isn't found in early humanity; [he]'s the product of a particular time place and ethnicity. The gods of Sumer, whose tradition via the Semitic tribes shapes much of the idea of [him], are known to have existed at least 2,000 years before [he] did. So are the wholly different gods of Egypt.
Yes people were making up gods galore with various names. Yahweh came on the scene late and to Abraham and his descendants, as the Bible tells us. But the true God was probably somewhere in the pantheons of other nations, just mainly unrecognisable, even if the Bible does identify Him in other nations and religions at times in the Pentateuch.
Melchizedek story, Enoch story (Genesis 5), story of Balaam (Numbers 22)