“This is the length of Abraham’s life, one hundred seventy-five years. Abraham breathed his last and died in a good old age, an old man and full of years, and was gathered to his people. His sons, Isaac and Ishmael buried him in the cave of Machpelah, in the field of Ephron son of Zohar the Hittite, east of Mamre, the field that Abraham purchased from the Hittites. There Abraham was buried, with his wife Sarah. After the death of Abraham, God blessed his son Isaac. Isaac dwelt at Beer-lahai-roi.”
Abraham lived to be a 175 years so that he ‘died in a good old age, an old man and full of years and was gathered to his people.’ That is a beautiful phrase, ‘full of years.’ His sons Isaac and Ishmael buried him with Sarah in the cave of Machpelah that he had purchased for her. Isaac settled in Beer-lahai-roi. There is no mention of Keturah and her 6 sons. It is quite possible that she could have been his wife for the last thirty years of his life. Apparently, they and Ishmael are out of luck, as Isaac got everything.