Sorry it took so long to get back to you with an answer. I wanted to make sure that I was not straying from the theme of the Essenes and their revile of the temple, believing that the Hebrew were following the wrong law, worshiping the wrong god and following the wrong calender.

Do I understand correctly that, because of the "atrocities," you believe that there were at least two gods? Yahweh and the "good" one? Because if the only god was evil, the game's over, one can't overcome a god, at least the way we define a god. (Unless you think a "good god" was created sometime after the "evil god." But can an evil god create good? I'm starting to get lost.)

Yahweh was not the only god and he wasn't even the greatest of the gods, but he wanted his people to think that.

The Song of Moses: Deuteronomy 32:

7 Remember the days of old;
consider the years of many generations;
ask your father, and he will show you,
your elders, and they will tell you.

8 When the Most High gave to the nations their inheritance,
when he divided mankind,
he fixed the borders of the peoples
according to the number of the sons of God.
9 But the LORD's portion is his people,
Jacob his allotted heritage.

According to the Dead Sea Scrolls "Most High" translates "El Elyon," the sons of God translates "Beni Elohim", literally "sons of god" and "LORD" translates "YHVH", "Yahweh". So what we see here is that the author of Deuteronomy considered El-Elyon to be a different god than YHVH, and that also that YHVH was just one of many gods. Perhaps he called "dibs" on Israel when nations were being handed out, or maybe he wasn't happy with his assignment.

The chapter follows with Yahweh finding "him" in the desert and caring for and nursing "him" until he got fat and spoiled. Then we see Yahweh devolve into frustration, rage, vengence and back to frustration.

10 “He found him in a desert land,
and in the howling waste of the wilderness;
he encircled him, he cared for him,
he kept him as the apple of his eye.

15 “But Jeshurun grew fat, and kicked;
you grew fat, stout, and sleek;
then he forsook God who made him
and scoffed at the Rock of his salvation.

23 “‘And I will heap disasters upon them;
I will spend my arrows on them;
24 they shall be wasted with hunger,
and devoured by plague
and poisonous pestilence;
I will send the teeth of beasts against them,
with the venom of things that crawl in the dust.
25 Outdoors the sword shall bereave,
and indoors terror,
for young man and woman alike,
the nursing child with the man of gray hairs.

26 I would have said, “I will cut them to pieces;
I will wipe them from human memory,”
27 had I not feared provocation by the enemy,
lest their adversaries should misunderstand,
lest they should say, “Our hand is triumphant,
it was not the Lord who did all this.”’

Here we see Yahweh set back in frustration. If he carries out is vengeful plan of wrath his enemies will think that they have done it, that they have won, and won't believe that his people's destruction was his (Yahweh's) plan, and they will claim victory over him.

Who are Yahweh's enemies? The other sons of God and their nations, IMHO.