Origins of words are a great study but when it comes to God, devil and belief in the divine etc that does not count at all.
In some countries God is called Devi, sounds a lot like Devil but the word existed way before the British started conquering other countries. In some countries this word is used in books with 2500 years early history.
We call him Jesus, but his name written in the NT is Iesous or Iesou. God is Ho Theos or Ton Theos. El, Elah, Elohim, Adonai, YHWH, whatever the name is, it does not matter. God is only in English, there other languages that uses various phrases for God. They may sound like someones mothers name.
I don't know where he is getting demon from.
However, Gad was a Goddess, and a Hebrew tribe. We also have a God of fortune in the Bible - called Gad. A pan-Semitic god of fortune.
Isa 65:11 But you are those who forsake YHVH, who forget My holy mountain; who array a table for Gad (The Babylonian Deity of fortune), and who fill mixed wine for Meni (The Deity of fate).
More interesting is that Baal is called Baal Gad = Lord God, and if you have read some of our threads here, you have probably seen our conversations about the Hebrew originally being wandering Canaanites. The Canaanites worshipped Baal Gad, and sacrificed their sons to him. According to the Bible the Hebrew also worshiped, and had child sacrifice, to Baal.
Jer 19:5 They have built also the high places of Baal, to burn their sons with fire
for burnt offerings unto Baal, which I commanded not, nor spake
it, neither came
it into my mind:
Eze 20:25 Wherefore
I gave them also statutes
that were not good, and judgments whereby they should not live;
Eze 20:26 And -
I - polluted them in their own
gifts, in that they caused to
pass through the fire all that openeth the womb, that I might make them desolate, to the end that they might know that I
am the LORD.
Here they associate Ba'al with Moloch. We have had many discussions on the Hebrew worshiping Moloch.
Jer 32:35 And they built the high places of
Baal in the valley of the son of Hinnom, to cause their sons and their daughters to pass through the fire
to Molech, which I did not command them, nor did it come into My heart, that they should do this detestable thing, to cause Judah to sin.
Interestingly - in the verse where YHVH tells them his name is YHVH, - he said their forefathers knew him by a different name.
Exo 6:2 And Elohiym spoke to Moses and said to him, I am YHVH.
Exo 6:3 And I appeared to Abraham, to Isaac and to Jacob as El Shaddai, and
by My name YHVH have I not been known to them.
"…
In other words, the Melech to whom child-sacrifices were offered was Yahweh under another name. To uphold this view appeal is made in particular to Jer., vii, 31; xix, 5, and to Ezech., xx, 25-31."- Catholic Encyclopedia
"In 1841, both Georg Friedrich Daumer and Friedrich Wilhelm Ghillany published influential works on the topic.
[18] These authors came to the conclusion that the Biblical text reflect an original identity of Molek and Yahweh, and that the cult of Yahweh grew out of that of Molek by the abolishing of human sacrifice. The authors find numerous instances of vestigial references to human sacrifice, most notably the law that all firstborns must be "consecrated" or "given" to Yahweh (
Exodus 13:2, 22:28)."
https://en.wikipedia.org/wiki/Moloch
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