Hagar & Keturah
Gen.17 And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make
him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make
him a great nation. And Abraham took Ishmael his son, and all that were born in his house,
and all that were bought with his money, every male among the men of Abraham's house; and
circumcised the flesh of their foreskin in the selfsame day, as God had said unto him.
 And Abraham was ninety years old and nine, when he was circumcised in the flesh of his foreskin.
 And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin.
 In the selfsame day was Abraham circumcised, and Ishmael his son.
 And all the men of his house, born in the house, and bought with money of the stranger, were circumcised with him.
Gen.21 And also of the son of the bondwoman will I make a nation, because he is thy seed.
 And God heard the voice of the lad; and the angel of God called Hagar out of heaven, and said unto her, What aileth thee, Hagar? fear not; for God hath heard the voice of the lad where he is.18] Arise, lift up the lad, and hold him in thine hand; for I will make him a great nation.
 And God opened her eyes, and she saw a well of water; and she went, and filled the bottle with water, and gave the lad drink.
 And God was with the lad; and he grew, and dwelt in the wilderness, and became an archer.
 And he dwelt in the wilderness of Paran: and his mother took him a wife out of the land of Egypt.
Gen.25 Then again Abraham took a wife, and her name was Keturah.  And she bare him
Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah.
 And Jokshan begat Sheba, and Dedan. And the sons of Dedan were Asshurim, and Letushim, and Leummim. And the sons of Midian; Ephah, and Epher, and Hanoch, and Abida, and Eldaah. All these were the children of Keturah.
 And Abraham gave all that he had unto Isaac.
 But unto the sons of the concubines, which Abraham had, Abraham gave gifts, and sent them away from Isaac his son, while he yet lived, eastward, unto the east country.
12] Now these are the generations of Ishmael, Abraham's son, whom Hagar the Egyptian, Sarah's handmaid, bare unto Abraham:
 And these are the names of the sons of Ishmael, by their names, according to their generations: the firstborn of Ishmael, Nebajoth; and Kedar, and Adbeel, and Mibsam,
 And Mishma, and Dumah, and Massa,
 Hadar, and Tema, Jetur, Naphish, and Kedemah:
 These are the sons of Ishmael, and these are their names, by their towns, and by their castles; twelve princes according to their nations.
1Chr.1 Now the sons of Keturah, Abraham's concubine: she bare Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. And the sons of Jokshan; Sheba, and Dedan.  And the sons of Midian; Ephah, and Epher, and Henoch, and Abida, and Eldaah. All these are the sons of Keturah.
Arabs will receive the Messiah
Isa.60: Arise, shine; for thy light is come, and the glory of the LORD is risen upon thee.
 For, behold, the darkness shall cover the earth, and gross darkness the people: but the LORD shall arise upon thee, and his glory shall be seen upon thee.
 And the Gentiles (Nations) shall come to thy light, and kings to the brightness of thy rising.
 Lift up thine eyes round about, and see: all they gather themselves together, they come to thee: thy sons shall come from far, and thy daughters shall be nursed at thy side.
 Then thou shalt see, and flow together, and thine heart shall fear, and be enlarged; because the abundance of the sea shall be converted unto thee, the forces of the Gentiles shall come unto thee.
 The multitude of camels shall cover thee, the dromedaries of Midian and Ephah; all they from Sheba shall come: they shall bring gold and incense; and they shall shew forth the praises of the LORD.
 All the flocks of Kedar shall be gathered together unto thee, the rams of Nebaioth shall minister unto thee: they shall come up with acceptance
Kedar and Nebaioth were the first two boys of the twelve sons to Ishmael.
Isa.19: In that day shall there be an altar to the LORD in the midst of the land of Egypt, and
a pillar at the border thereof to the LORD.
 And it shall be for a sign and for a witness unto the LORD of hosts in the land of Egypt: for they shall cry unto the LORD because of the oppressors, and he shall send them a saviour, and a great one, and he shall deliver them.
 And the LORD shall be known to Egypt, and the Egyptians shall know the LORD in that day, and shall do sacrifice and oblation; yea, they shall vow a vow unto the LORD, and perform it.
 And the LORD shall smite Egypt: he shall smite and heal it: and they shall return even to the LORD, and he shall be intreated of them, and shall heal them.
 In that day shall there be a highway out of Egypt to Assyria, and the Assyrian shall come into Egypt, and the Egyptian into Assyria, and the Egyptians shall serve with the Assyrians.
 In that day shall Israel be the third with Egypt and with Assyria, even a blessing in the midst of the land:
 Whom the LORD of hosts shall bless, saying, Blessed be Egypt my people, and Assyria the work of my hands, and Israel mine inheritance.