Yes and no.
Yes: the Israelites kept the Sabbath as best they could (except possibly for any who had assimilated). The midrash disc usses this.
No: there were no Black Israelites, since they weren't Black.
Our tradition is that the twelve sons of Jacob (the 12 Tribes) were not completely similar to each other in appearance, though none of them was really dark-skinned (Rashi commentary on Genesis 12:11).
Abraham himself came from Western Asia, and since Jews have intermarried very little in the last 3800 years, the answer is that he probably looked like Jews today.
DNA testing of Jewish communities worldwide has shown that they are all interrelated and of Middle Eastern genetics, comparable to the Sephardim today (not African or Egyptian). Our own ancient sources state that the Hebrews were not Black.
It is important to note that while Blacks were enslaved, especially in the last six centuries of human history, the Israelite enslavement was at a different period of time. While the Black Israelite Churches argue that the original Israelites were black, there is no historical evidence to corroborate this view in contravention to the large amount of archaeological evidence that points to the population of Ancient Israel as being the Israelites mentioned in The Bible.
The Israelites spoke Hebrew, as is abundantly clear from the Hebrew Bible.
From a biblical perspective, Moses helped the Israelites escape from their lives of slavery in Egypt. From a historical perspective, Moses did not help the Israelites escape from anywhere. After all, it has been reported that over 90 per cent of scholars say that there never was an Exodus from Egypt.
The word Sabbath comes from Biblical Hebrew and means a day of cessation from labor or creative work. In Judaism, this day is from Friday sundown until Saturday after twilight.
He led the Israelites out of slavery in Egypt, to the Promised land, so yes.
In English? SAbbath. In Ashkenazic Hebrew? SHAbos. In Sephardic Hebrew? shaBAT.
Sabbath is an English word that comes from the Hebrew word Shabbát (שבת)
It depends one what Hebrew word is after the word "Sabbath." Unless you are asking how to translate the phrase "after Sabbath" which is acharei Shabbat (אחרי שבת)
Passover is pesach, spelled פסח in both biblical and modern Hebrew.
sister = achót (אחות)it's the same word in both Biblical Hebrew and Modern Hebrew.
they didn't "become" Hebrew. They started out as Hebrew, because Abraham was a Hebrew.
there's no such designation as a "back Hebrew Israelites"
The English word "sabbath" is one of the many words that came to English from Hebrew,by way of King James' translation committee.The original Hebrew word is pronounced "shah-BAHT". Included in it are elements of the conceptsof "seven" and "pause" or "rest".Whatever the word "sabbath" means to you is evolved from the Hebrew concept of Sabbath.