Who are the “brethren” from whom a prophet will come?

[article by Mr.P] Concerning “The LORD your God will raise up for you a Prophet like me from your midst, from your brethren. Him you shall hear,” (Deuteronomy 18:15), does “of/from your brethren” only include Jews or could it also include the Arabs? Below are all the references to “of your brethren/brothers” and “from your brethren/brothers”…