A Little while after this Abraham died. He was a man of incomparable virtue, and honored by God in a manner agreeable to his piety towards him. The whole time of his life was one hundred seventy and five years, and he was buried in Hebron, with his wife Sarah, by their sons Isaac and Ismael.
Judaism · Jewish History · Antiquities of the Jews
Book I, Ch. 17 — Concerning The Death Of Abraham.
Antiquities of the Jews · Flavius Josephus