Genesis 25:1-11 NKJV
Abraham again took a wife, and her name was Keturah. And she bore him Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. Jokshan begot Sheba and Dedan. And the sons of Dedan were Asshurim, Letushim, and Leummim. And the sons of Midian were Ephah, Epher, Hanoch, Abidah, and Eldaah. All these were the children of Keturah.
And Abraham gave all that he had to Isaac. But Abraham gave gifts to the sons of the concubines which Abraham had; and while he was still living he sent them eastward, away from Isaac his son, to the country of the east.
This is the sum of the years of Abraham’s life which he lived: one hundred and seventy-five years. Then Abraham breathed his last and died in a good old age, an old man and full of years, and was gathered to his people. And his sons Isaac and Ishmael buried him in the cave of Machpelah, which is before Mamre, in the field of Ephron the son of Zohar the Hittite, the field which Abraham purchased from the sons of Heth. There Abraham was buried, and Sarah his wife. And it came to pass, after the death of Abraham, that God blessed his son Isaac. And Isaac dwelt at Beer Lahai Roi.
NKJV: New King James Version