You're being mischievous, Tweaker; I think you know very well that this is interpreted by Christians as a reference to the triune Divinity.
Are you trying to wind up the JWs?
people have been studying the Bible in detail for centuries and there's no evidence that they have all "surely" become atheists. It probably doesn't pay to believe everything illusionists tell you.
At the moment I am reading a book called "Don't sleep there are snakes" by Daniel Everett. He is a missionary and linguist and set off to convert an obscure Amazonian tribe to Christianity. They had no concept of God or religion and gradually through living with them he ended up an atheist.Make of that what you will.
I don't think the Israelites were originally monotheistic; there were other gods alongside Jehovah, but he seems to have gradually overcome them, perhaps as his followers became more powerful than others. He seems to have been different from Elohim, or perhaps the same person seen in a different way. Elohim was like the God we know today, rather distant from the world. Jehovah was more anthropomorphic, going for strolls in the garden and chatting to his creations.
the book i mentioned above Richard Elliott Friedmans 'the bible with sources revealed' proves that different priests, the Deutronomistics the YHWH's and Elohimist's (J) all called the 'one' God by different names.
The 5 books of Moses were collected and pieced together which is why in Genesis chapter 1 through to chapter 2 verse 4 only the word 'God' is only used.
Then from that point on up to chapter 4 verse 24 'YHWH God' is then bought in. Written by different people in different places at different times. But still just one God.