[Avodah] Ten lost tribes (was Re: Moshiach Ben Yosef)

[Simon Montagu via Avodah]

On Fri, Mar 4, 2016 at 4:12 AM, Micha Berger via Avodah
<avodah at lists.aishdas.org> wrote:

> Malkhus Yehudah included Yehudah, Shim'on and Binyamin, as well as most
> of Levi (they tended to prefer proximity to Y-m). Shim'on only got lost
> in the sense that as they only held a constellation of cities within
> Yehudah's territory, they assimilated into Yehudah. But they should be
> among today's Jews. I do not know how we get "10 lost tribes" rather
> than 9, but the count is in the Bavli.

And before that in Sefer Melachim, e.g.
http://mechon-mamre.org/p/pt/pt09a11.htm#31. I'm not sure either what
ten the navi is counting, but there it is.