around the year 750 CE, the Karaites tried to convert the Khazars to Karaite Judaism.
https:// shavei.org/karaite-jews-in-crimea/
The Karaites are descendants of the Sadducees (temple/priest cult family in jerusalem, at the time of King David, they were evil, Jesus called them Vipers.
The sadducees are related to hyksos in egypt and the last Babylonian kings, and they were ethnic Armenian.