Abraham suffered a severe loss at the same time in the death of his brother Nahor, whose days ended at Haran, when he had reached the age of one hundred and seventy two years.
The death of Sarah dealt Abraham a blow from which he did not recover. So long as she was alive, he felt himself young and vigorous, but after she had passed away, old age suddenly overtook him. It was he himself who made the plea that age be betrayed by suitable signs and tokens. Before the time of Abraham an old man was not distinguishable externally from a young man, and as Isaac was the image of his father, it happened frequently that father and son were mistaken for each other, and a request meant for the one was preferred to the other. Abraham prayed therefore that old age might have marks to distinguish it from youth, and God granted his petition, and since the time of Abraham the appearance of men changes in old age. This is one of the seven great wonders that have occurred in the course of history.