New answers tagged mesorah-tradition
The shift happened from the Shulchan aruch. Before the Shulchan Aruch, halacha was decided by each posek looking towards the Talmud and Geonim, or being influenced by other Rabeim, and coming to their own decision about an issue, based on what made sense to them and their community. (Using many many factors) The Shulchan Aruch however, decided to take a 2 ...
The time of the shulchan aruch is about right; there is also a shift in rabbinical names about the same time. many(but not all) rishonim went by acronyms...rashi, rashbam, rambam, ramban, or by their own names .... ibn ezra,sforno, abarbanel acharonim often wrote their comments under a pen name....chafetz chaim, gur aryeh, etc.
I'm not sure what light you want shed on this other than not to trust the Mikraot Gedolot for fine issues of proper nusach hamikra. The Aleppo, Leningrad, Bodmer, Damascus, and Cairo Codices (9th to 12th centuries) all have a כ. Bomberg's Mikraot Gedolot (2nd edition, 16th century, seen below) has a ב. Bomberg's edition is notorious for small errors, but its ...
For what's its worth, here's the version from the Dead Sea Scrolls: See it here: http://dss.collections.imj.org.il/isaiah?id=17:11#8:11 So that version, also has the word spelled with a "kaf".
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