Genesis 11:25

and Nahor lived, after he begat Terah, an hundred and nineteen years and begat sons and daughters. A careful comparison of this list with the genealogical table of Genesis 5 shows a very decided shortening of the average life of man after the Flood. While Noah still reached the age of 950 years, the age of man, with Arphaxad, sank down below 500 years; this again, was reduced, with Peleg, to 239 years and with Nahor to 148 years. In the short space of eight generations, therefore, the average age of man was reduced almost to the level which it has maintained since. This was due partly to the change of climate on the surface of the earth, partly to the different mode of living.