Genesis 5:26

26 And after the birth of Lamech, Methuselah went on living for seven hundred and eighty-two years, and had sons and daughters:

Genesis 5:26 Meaning and Commentary

Genesis 5:26

And Methuselah lived, after he begat Lamech, seven hundred
eighty and two years
The Greek version is eight hundred and two years, and so makes the sum total of his life the same; but the Samaritan version only six hundred and fifty three, and so makes his whole life but seven hundred and twenty; and thus, instead of being the oldest, he is made the youngest of the antediluvian patriarchs, excepting his father Enoch: and begat sons and daughters;
some, it is highly probable, before he beget Lamech, since then he was near two hundred years of age, as well as others after

Genesis 5:26 In-Context

24 And Enoch went on in God's ways: and he was not seen again, for God took him.

25 And Methuselah was a hundred and eighty-seven years old when he became the father of Lamech:

26 And after the birth of Lamech, Methuselah went on living for seven hundred and eighty-two years, and had sons and daughters:

27 And all the years of Methuselah's life were nine hundred and sixty-nine: and he came to his end.

28 And Lamech was a hundred and eighty-two years old when he had a son: