Pagans worshipped creation not the creator.
The concept of
deity develops in Greece and probably in other places, too, as does the idea of monotheism. The Greek pantheon shows that it is abstract. Creation is derived from Chaos in stages, and this is described as the lineage of the gods: time, essence which is mythic rather than literal. I am sure many people of these ancient pagans understand that this is an abstraction for things they don't understand.
Greeks come up with the concept of deity and the word for it long before Jews or Babylonians. I understand that many Greeks are also superstitious about their gods, but I think they are not obsessed about things being absolutely in a particular religious order except when it comes to wars and politics. Then each side insists that they have the support of a god, but its just a bunch of political talk with no funding. They inquire by killing a goat, and if the god says not to fight they just kill another goat until the god says to fight. The gods are philosophical items except when its politics trying to piggyback on philosophy.
The
Babylonians in Mesopotamia discover monotheism with Malek, a god of war. They then probably introduce it to Judaism (when they conquer Israel and take many slaves who then eventually send a convoy of exiles back to Israel) which recreates the evil Malek as benevolent, much like it recreates violent Gilgamesh in the form of non-violent Noah and his sons. The concept of deity and of monotheism is not difficult for the pagans or for people in general. What's difficult is the vision of world peace when the world is busily at war.
This vision of peace is probably forged in Canaan as a small group of people are repeatedly attacked over the centuries -- like Latvia is. They manage to cling together by means of a covenant which is tempered and improved over time, part of a vibrant culture that adopts all comers and slaves from all around. They all are fused together with this covenant, a rag tag pack of nobodies. Little do the Judeans know that their little precious covenant is being polished for use in a wider sense, but when they encounter the Babylonians and Malek there is created a perfect storm. Malek loses to Yahweh who wages a siege war by peaceful means. If Yahweh eats any gods it is by that method only. The unification of Canaan could not have come about otherwise and been anything but a warlike culture, and I know it was a passive culture which appeared in that region with a philosophical dislike both for wars and for kings. It considered war an embarrassment and eventually spread that idea, so that today war is considered shameful instead of glorious except by rare political proponents of reverse culture. Today war is a taint and a problem to be solved, and this is the result of the harnessing of the concepts associated with fertility. Someone built a system that would revive their peaceful ideas even after they were dead, and it triumphed over the other systems which were focused on success in the present and which could not withstand the rigors of time.
Consider ancient Mesopotamia.
During the periods of Halaf (5500-4500 BC), Ubaid (5300-3750 BC) and Protoliterate (3750-2900 BC) we see incredible changes take Mesopotamia by storm. We see an
increase in pottery design and decoration, the smelting of copper and other metals which replace stone tools and weapons, we see towns increase in size by the thousands, enhanced irrigation systems put in place, temples grow larger and higher, and fertility become a focal point of the peoples.
The way I see this is that Mesopotamia is
at first unified imperfectly through political force and stratification of social classes, and it is enabled through agriculture. It borrows ideas from nearby successful Egypt, with of course the hope of being better than any other country. These ideas though horrific do lead to a strong military and religiously backed sovereigns. That in turn brings the stability necessary for the improvement of the arts and so forth. Its similar to the effect of the Shoguns of Japan when their military might creates the possibility of stability and trade. People do benefit despite the horror. Its analogous to the plagues which so benefit medieval European society and lead to the enlightenment period.
This eventually leads to the adoration of Marduk that great God whose warlike nature while anathema to the covenants of the Judeans nevertheless contains a very interesting idea of global peace and prosperity. They even tell kindly stories with enlightened versions of the Babylonian and Persian monarchs.
"Then King Darius wrote to all the nations and peoples of every language in all the earth: 'May you prosper greatly!...' " Daniel 6:25 What are the odds that this king actually would say this? What a real king would say is what we see written on every stele of the period. "I killed THIS MANY. Fear me!" Not "May you prosper greatly."
During these times nearly 70% of all children under age five died, and with deaths increasing from people in battles a sense of the progression of life was focused upon.
To the peoples of these periods, they also saw fertility as the earth giving back, and pantheons of gods and goddesses began to develop so that by 3000 BC there were over four thousand deities worshiped in the region as mankind worshiped and adored the creation instead of the true Creator.
Abraham: From Ur to Haran
Fertility: that hidden principle by which life continues in spite of death. These days we understand the biological process though we are yet unable to supplant it with immortality. The ancients don't understand it, but oh boy do the ancients study it and obsess over it.
They knew somehow the seeds were the key, and they also believed that humans must have some kind of seed somewhere in our bodies. Mesopotamian culture contrived that it was the sacral bone, since it was near to the womb. I think much later this idea also found its way in the the Koran. (How it got in there no one knows, but I assume it was an errant scribe.) Fertility is that mystery by which a tree dies and yet lives. It is fertility that every king hopes to harness for his own greatness. Today we know it as DNA, although we cannot yet surpass it. It still both kills us and makes us alive and confines us to this planet. Now just like then it fills our symbolism, and everybody talks about it.
People knew that fertility was a process that was not understood going back perhaps forever into the past into the unknown, although they styled this as chaos or in other ways indicated that they expected there was a beginning. It wasn't all superstition, and
they derived abstract concepts like deity much like people do even now using philosophy. Of course this abstract thought led them to think philosophically sometimes and of the hidden relationships between all things which were philosophically divine, surpassing perhaps the powers of gods. They developed terminology to discuss it. Many cultures did from the Vedics to the Greeks. Even some Egyptians did. Chinese developed the Tao. What I note is that the pagans were not purely pagan nor purely polytheists.
It is also fertility which festoons Judean religious relics, appears in their ancient writings. The golden eternal lampstand is a one piece casting designed as a plant. The tabernacle is decorated with pomegranates. The garden of Eden contains the tree of eternal life, which one eats, taking into themselves the principle of fertility by which all things live. The idea that Abraham is given in his vision is one of a worldwide family. Its a fertility based idea to take that mysterious principle in seeds and use it to create a worldwide kingdom based on peace instead of war. Its an audacious and advanced idea which appears in these texts, and its compatible with monotheism or polytheism provided you allow for abstract hidden relationships in the world around you.
This, then, provides a basis for Christianity to adore and incorporate concepts which, while seemingly pagan, may in fact contain divine wisdom. Thus we have the Trinity from Plato even though he is a lascivious and violent man. We have Easter even though it is named after a goddess. We have Halloween even though it is originally related to...whatever its related to originally. We take the good, collect it up, spread it around.