Jewish Belarus
The National Flag of Belarus
In a timeline where the Khazars make it further west, some Slavs convert to Judaism. The Kryvich tribes around Polatsk specifically take the religion seriously, eventually developing their own version (known as Kryvich Judaism) akin to Karaite Judaism OTL. Differentiated from other Jews by their rejection of the Oral Torah and numerous local traditions, Belarusian Jews use red ruchniks (traditional Slavic fabric weaves) as their prayer shawls. The segmented Star of David, known as a Kryvich Star, appears on the flag in the same way it does on prayer ruchniks.
Example of a prayer ruchnik, with examples of the three major Kryvich symbols: the Kryvich Star, the Holy Gate (a three-barred cross), and the Split Sea (anvil-like shape)
Prayer ruchniks are not standardised, but are generally expected to have at least one Jewish element. Traditionally, it is considered good luck to have all three Kryvich symbols, which are the Kryvich Star, the Holy Gate, and the Split Sea. The Kryvich Star is a mark of faith and unity of family/nation, representing the vision of Prince Ruslan of Minsk. The Holy Gate symbolizes security and safety, and represents the gates of Heaven (in Kryvich Judaism, ideas of Heaven and Hell were syncretized from neighboring Christians). Finally, the Split Sea is a largely abstract symbol thought to predate Judaism in the region, but it is said to represent the splitting of the Red Sea by Moses, bringing safe passage to those who wear it.
Notes:
-The Kryvich(ians) are a real tribe which existed, but there's not much historical record to go on. Belarusians consider them to be one of the predecessors to modern Belarus
-The star is inspired by traditional star/cross patterns which appear on OTL rushniks (also seen here in the logo for the Belarusian Christian Democrats)
-Ruslan is not a real historical person, just made him up. The Star Vision was inspired by Constantine's vision of the Chi-Rho.
-The Holy Gate is inspired by the Temple Menorah which was the most popular symbol of Judaism before the Star of David was popularized in Europe. It is a simplified version which also appears in some Kabbalah manuscripts. I took the name from the Holy Gate of Dawn in Vilnius (mentioned in the Belarusian song "Pahonia")
-The "Split Sea" symbol is a real thing which appears on a lot of weave patterns around the world, I just gave it a new meaning
-Ruchniks are a real thing and are frequently displayed in religious contexts, so I figured they might be used in Judaism if Belarus went in that direction.
Belarus? mor liek.... Belajews! amirite?
*canned laugh track*