Genesis 5:4

“And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters:”

Genesis 5:19

“And Jared lived after he begat Enoch eight hundred years, and begat sons and daughters:”

Genesis 14:14

“And when Abram heard that his brother was taken captive, he armed his trained servants, born in his own house, three hun...”

Genesis 17:12

“And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in th...”

Genesis 21:4

“And Abraham circumcised his son Isaac being eight days old, as God had commanded him.”