And the angel of the Lord said unto her, Behold, thou art with child, and shalt bear a son, and shalt call his name Ishmael; because the Lord hath heard thy affliction. And he will be a wild man; his hand will be against every man, and every man's hand against him; ... Gen. 16:11,12
The sixteenth chapter of Genesis is devoted to the birth of the father of the Arabs. It is good to read the whole chapter to see how it all began. Hagar left the home of Abraham and almost died in the desert. An angel found her there and told her she was going to have a child. He would be the progenitor of a fierce race.
Hagar was an Egyptian. Abraham was the child's father. This was before the birth of Isaac, so Ishmael has a long history. Arabs, which came from Ishmael, are half Egyptian.
I saw a learned Egyptian woman interviewed. She dismissed the Arabs as "Tribes without flags," but the Bible tells of their origin, and we may do well to learn its prophecies.