Why is it by many that a Jews religious status is defined by him Keeping shobbos and not by any other misvah and when they refer to such Jews very commonly it is said that he is a shomer shobbos? What makes shobbos different than all other misvot in the Torah ?
Shabbos is the one most important mitsvot that if one doesn’t keep he is considered to be like a goi (also avoda zara).
Rashi in chulin 5 says that a person who violated idol worship is כופר in Hashem and one who doesn’t keep shabbos is כופר in Him creating the world since shabbos represents the creation of the world.
Categories: Israel and the nations, Shabbat