Verses with the word eighty in the Old Testament (3 verses):

Genesis 5:25
And Methuselah lived an hundred eighty and seven years, and begat Lamech.

Genesis 5:26
And Methuselah lived after he begat Lamech seven hundred eighty and two years, and begat sons and daughters:

Genesis 5:28
And Lamech lived an hundred eighty and two years, and begat a son: