Well, keeping in mind that the JW "history" is ever-so-slightly slanted to preview the whole Jesus thing. I think most Christian religions use the same bent. Sometimes I have to stop and think, Truthseeker, how much I understand of my "Jewish History" is colored by the JW painting of it. They take all of the Bible, mistranslate it, take it out of context, and only consult outside sources on interpretation when it suits whatever mind control tachnique they are currently practicing. The real connection between the JW "history" to which you refer is the need for the "organization" or a "channel" to God.
Not so with the early Jews. Looking at all that leadership in the early history of the Jews as "mediation" isn't exactly Jewish. Think of some of the prominant non-priestly figures, like Jonah, Miriam, Ruth, Naomi, Esther (yeah, I know, there are more, but I have con law on the brain). That form of worship, devotion and loyalty was not accomplished through the "mediator" of the day, but by dint of their own determination.
And anyway, those "sacrifices" were promptly followed by fabulous barbecue (of the recently sacrificed animals) (Baruchu...) and days on end of partying. When did that ever happen in JW style "worship." Maybe things would have been different for me had that been the case: Say the blessing, butcher the cow, barbecue the beast and get down to the real business of hanging out at a festival, eating, drinking, singing, dancing, buying and selling trinkets and goodies, and generally celebrating freedom...
Shoshana