Judaism is a strict Monotheistic religion Buddhism is often described as a nontheistic religion, no mention of one Monotheistic creator diety. however some teachings describe “devas” as divine beings who are also in a perpetual cycle like life is, which is the basic principle of Buddhism and such is anything but a Monotheistic religion
So no, you can’t be Buddhist and follow Judaism at the same time or whatever since believing in no one creator entity violates Judaism. So this “Jubu” thing doesn’t really make sense if one thinks about the basic beliefs of both religions
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