Sadducees did not believe any of that as far as I know, and most of this mysticism is not biblical, or is it?
I am currently studying a book (two pages a day) on the Noachide Laws endorsed by authentic Orthodox rabbis. It begins by noting that "the righteous of the nations [which means pious observants of the Noachide Laws, not "all nice people"] have a portion in the resurrection of the dead and the life of the world to come," but after this focuses entirely on law, statute, and regulation. That is Judaism's exoteric systematic thrust.
I thought the life of the World to Come follows the Messianic Age as a mid-stage spiritual bliss, before the Great Judgment and the eternal World of Resurrection.
How many very sweet and sincere Judaeophilic "Bible chr*stians" know the important role of gilgul neshamot (ie, "reincarnation") in Orthodox Judaism? Of course, not all Orthodox Jews believe in it (it is rejected by the highly rationalistic).
I am willing to bet that most extreme Judaephillic Christians would find it acceptable. Most mainline Protetsants would not. They are simply still too "Catholic." Of course, the Church flatly reject incarnation on the premise that the "self" would be lost and that we as individuals do not exist.
I'm afraid I'll never understand classical chr*stianity. From my perspective as a Fundamentalist Protestant...
When were you a Fundamentalist Protestant?
But that we're "messed up" only enough to replace the Torah with something else?
It's not that simple...but that's another topic.
From the time I was born until I converted to Catholicism. In fact, I'd say until after.
Gilgul neshamot and the doctrine of the soul are very complicated.
You are right, the Tzadduqqim rejected everything not written in the Torah. They were the "Protestants" of their day.