In #exodus 16:25-26 the manna didn't come on #sabbath for anybody, whether native or non-native. The Sabbath applied to everyone equally. The Sabbath is also discussed in this passage as a familiar thing. Moses didn't have to explain to anyone what the Sabbath was, so we can know that the Hebrews knew about it before the Exodus and Sinai. Shabbat is for everyone, not just the Hebrews and not just those to whom the Law was given at Sinai.
#shabbat
https://soilfromstone.blogspot.....com/2017/02/the-sab