Abraham married another woman. Her name was Keturah.
References for Genesis 25:1
She had Zimran, Jokshan, Medan, Midian, Ishbak and Shuah by Abraham.
Jokshan was the father of Sheba and Dedan. The children of Dedan were the Asshurites, the Letushites and the Leummites.
The sons of Midian were Ephah, Epher, Hanoch, Abida and Eldaah. All of them came from Keturah.
Abraham left everything he owned to Isaac.
But while he was still living, he gave gifts to the sons of his concubines. Then he sent them away from his son Isaac. He sent them to the land of the east.
Abraham lived a total of 175 years.
He took his last breath and died when he was very old. He had lived a very long time. Then he joined the members of his family who had already died.
Abraham's sons Isaac and Ishmael buried his body. They put it in the cave of Machpelah near Mamre. It was in the field of Ephron, the son of Zohar the Hittite.
Abraham had bought it from the Hittites. He was buried there with his wife Sarah.
After Abraham died, God blessed his son Isaac. At that time Isaac lived near Beer Lahai Roi.