זְ֭רַמְתָּם שֵׁנָ֣ה יִהְי֑וּ בַּ֝בֹּ֗קֶר כֶּחָצִ֥יר יַחֲלֹֽף׃
주께서 저희를 홍수처럼 쓸어 가시나이다 저희는 잠간 자는 것 같으며 아침에 돋는 풀 같으니이다
Chizkuni
ויחי שם אחרי הולידו את ארפכשד, “After having sired Arpachshad, Shem lived for another 500 years.” The formula preceding the death of the members of the earlier generations familiar to us as: ויהיו כל ימיו, “all of the years of his life were, etc.,” is absent now seeing that the life-spans of the antediluvian generations had closely approached 1000 years, something no longer the case after the deluge. (Compare Psalms 90,5 זרמתם שנה, “You let their years flow past as if they had only slept.” According to David, normal life spans in his time amounted to 70, maximum 80 years; verse 10 in the same chapter) There was therefore no need for the Torah to add the words: “all their days.”