I am 60% sure that this thread exists somewhere already. However, I'll answer it regardless.
In my personal view of deities, I am atheistic. This means that I do not believe in the existence of a god or gods. I feel this way because there is no sound proof that convinces me otherwise. In addition, most of the qualities attributed to deities feel anthropomorphized; most religions explain this by stating that god(s) created man in his/her/its/their likeness, but this is outweighed by the amount of un-compelling answers about deities that are provided time after time. Again, personally, based off of prior education, I believe that gods arose from man's desire for explanation of the natural realm. Before science, it was commonplace to explain aspects of life in terms of the supernatural; without science, even the most basic of things, like air and fire, can be astounding. As a result, this is why deities in ancient times unambiguously embodied the primal elements (as well as things so fundamental as emotion).
I cite this time and time again, but--We have Thor, the god of strength whose enchanted hammer becomes a lightning bolt when thrown, Zeus, the sky-god of the Greeks whose ability to cause rain was renowned across the Mediterranean, Izanagi and Izanami, once lovers turned agents of creation and death, Set, the god whose likeness embodied the darkness and storms of deserts, among others. It's no coincidence that every culture worldwide had deities who embodied the elements, which leads me to strongly suspect that they not only controlled the elements, but were the elements, deified. Thor is lightning, Zeus is rain, Izanagi and Izanami are life and death, and Set is desert plague. Eris is strife, Kvasir is inspiration, Ereshkigal is the passage between life and death, Pluto is Greed, Persephone is springtime, Cybele is nature. It's as simple as that.
However, once enough lore comes about, it makes sense that more and more gods arise out of story-crafting. The reason why Cerberos exists is because Hades needed a watchdog. The reason why Lif and Lifthrasir exist is because they needed to become the next human race after Ragnarokr. Following this, all cultures, in Greek / Roman mythos in particular, have a trend of combining aspects of gods together. We originally had Athena, goddess of war prowess, and Nike, goddess of victory--the two slowly fused identities and became one deity. We had Venus, goddess of beauty and love, and Cloacina, an Etruscan goddess--the Romans ultimately opted to combine the two of them.
Therefore, my view of the monotheistic-common God of modern day is that He is the combination of many different gods together. It's absolutely no coincidence that he carries the traits of many Western deities, and the stories in the Bible closely correlate to seemingly unrelated cultures.
