The publication The Races of Mankind states: “The races of mankind are what the Bible says they are ​ — brothers. ” Brothers are often quite different, but they are brothers nonetheless.
وَمَعَ أَنَّ ٱلْإِخْوَةَ هُمْ فِي أَغْلَبِ ٱلْأَحْيَانِ مُخْتَلِفُونَ ،‏ فَذلِكَ لَا يَنْفِي كَوْنَهُمْ إِخْوَةً .‏