Shaatnez is proibition from the Tora of using a vest that contains wool and flax.
Only the Cohen Gadol could use when he was at the Beit Hamicdash at Jerusalem.
This a decree that is over our understanding. Although there is a interpretation that somehow explains;
- Caim and Abel took their offer to G-d. Caim was agriculturist and took plants that result on flax and Abel was shepheard that took his sheep that result in wool.
According to Cabala these two sons of Adam represented spiritual opposit powers that must be always separated as the offers (can’t be blended).
Today at 17:47 at San Paulo, Brazil will start Yom Kippur, knowned in inglish like the Day of Atonement.
In these days jewish can’t use leather shoes. Why?
One of the explanations is because, there are the mineral proteins, up there are the vegetal and then the animal. It’s like saying: the water feeds the vegetable (mineral and vegetal), that is eaten by the animal - cow.
When you use leather shoes (can’t just use shoes) it’s like saying that humans are superior these other proteins, although Yom Kippur there is not something like that. It’s a day to redeem oneself.