YHVH or is it Elohim? Good question.
There are many names for God in the OT, and if you're aware of them, it gives a really good insight into the minds of the people at the time. First off, the -im suffix inicates a plural noun (seraph -> seraphim, cherub->cherubim, etc) - so, this really reads "Gods"; however, since he has become one God, they now declare this to be a rare exception. The fact that it was multiple gods is reinforced by God speaking in plurals ("we" will do something, they will be like "us", etc).
Also, if you watch the names, some names for God turn into names for evil gods - for example, ba'al, which means (if I recall correctly) "master" (or is it "almighty"? I always get it confused with "adonai"), who later became one of the more despised deities. There are also lots of other names used, and to further it, they're regional, and sometimes those regions are seen as enemies to the authors of a given book.
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"Illuminant light,
illuminate me."