About “early holiday decorations and shopping,” it seems, little more can helpfully be said. But what can be said about the “Christmas story” will always be inexhaustible. Even, for example, about demigods and demagogues before whom, unaccountably, human beings have so long been inclined to bow their knees.
In the ancient Near East, kings represented the gods -- and were reverenced accordingly. Israel’s monotheism provided a sharp critique not only of polytheism but of all ruler-worship. But after Julius Caesar, deification of the Roman emperor became common (probably of course taken most seriously among the less educated classes). Augustus was certainly regarded as a god, and on the denarius that Peter found in the fish and showed to Jesus there would have been the inscription “Son of the Divine Augustus.” In the Greek-speaking but multiethnic East, ruler worship was even more common.
Nor was the practice simply ancient. Think of the way Nazi crowds idolized Hitler (and how neo-Nazi terrorists are active today).