My general point is that the rituals and festivals in Judaism can be seen outside of it. It was not until the Middle Ages that Judaism reached a form of true monotheism, and even then it was not universal. Due to the frequent trade and similarities between the two deities, both 'El' and 'Yahweh' were used by the Hebrews to refer to the same deity. It has its origins as an Arabian (specifically from Midian, later known as Nabataea) deity associated with El. Some time in the early iron age, the name 'Yahweh' began to appear. This henotheism would continue well into the Roman age. Later, they began to worship the king of the gods, El, while recognizing the existence and powers of others. The Hebrews originally had a religion identical to the Phoenicians, and the two languages were near identical (even today, Hebrew closely mimics the long-dead Phoenician). There's multiple texts written about the religious aspect, although it is hardly a static aspect.

Is there a religious aspect to Judaism? Of course. Sand everywhere, ugh.) Other rituals, practiced in the past and today, represent ancient concepts like tribal taxation, tribal dominance, and other such political mechanisms. This is where Egyptian cognates are the highest, as the Egyptians likewise had a very strong cultural emphasis on cleanliness (and, when one lives in the desert, it is to be expected. Many of the rituals in Judaism are about cleanliness and sanitation, from when you can pop a baby into a lady to circumcision, the whole lot is about staying clean and healthy.

Many of the things forbidden by Kosher are so because, in ancient days, they led to potentially fatal sickness and parasites. The Kosher diet, for instance, is about maintaining health. Meanwhile, all of the practices likewise hold secular origin representative of preislamic, especially Canaanite (Phoenicians and Hebrews), with clear cognates in Akkadian and Egyptian practice. Purim celebrates an escape from potential extinction at the hands of a malicious Persian. Hanukkah deals with the victory over the occupants and the supposed miracle of long-lasting oil, not of divine interference in said war. Passover, for instance, celebrates the return to Canaan, rather than the divine occurrence associated with it. Almost all of the holidays and festivals within it are representative of historical (or believed historical) events. I'd say Judaism is perhaps the best example. This is, however, not to discount the large impact of traditional beliefs on such cultures, which have largely shaped them and still do today, regardless of the Abrahamic dominance in said regions. I cannot 100% verify the invalidity of this, not being an Asatruar myself, but I'm not entirely certain this is the case, given the multicultural Germanic presence, as well as certain aspects having little secular value.

Crusader kings 2 pagan