'Twelve Thousand' in the Bible

Of the tribe of Judah were sealed twelve thousand: of the tribe of Reuben were sealed twelve thousand: of the tribe of Gad were sealed twelve thousand:

of the tribe of Aser were sealed twelve thousand: of the tribe of Nephthalim were sealed twelve thousand: of the tribe of Manasseh were sealed twelve thousand:

of the tribe of Simeon were sealed twelve thousand: of the tribe of Levi were sealed twelve thousand: of the tribe of Issachar were sealed twelve thousand:

of the tribe of Zabulon were sealed twelve thousand: of the tribe of Joseph were sealed twelve thousand: of the tribe of Benjamin were sealed twelve thousand.

And the city was four-square, it's length being as much as the breadth: and he measured the city with the reed twelve thousand furlongs: the length and the breadth and the height of it are equal.