Ezekiel 48:17

And the suburbs of the city shall be toward the north two
hundred and fifty
That is, so many reeds: and toward the south two hundred and fifty;
which make five hundred; and these being added to four thousand five hundred, north and south, make five thousand: and toward the east two hundred and fifty, and toward the west two
hundred and fifty;
which being added to four thousand five hundred, east and west, make five thousand; and so an equilateral square on each side, length and breadth.