'Four square' in the Bible
And thou shalt make an altar of shittim wood, five cubits long, and five cubits broad; the altar shall be foursquare: and its hight shall be three cubits.
Foursquare it shall be, being doubled; a span shall be its length, and a span shall be its breadth.
A cubit shall be its length, and a cubit its breadth; foursquare shall it be; and two cubits shall be its hight: its horns shall be of the same.
And he made the incense-altar of shittim wood: the length of it was a cubit, and the breadth of it a cubit; it was foursquare; and two cubits was the hight of it; the horns of it were of the same.
And he made the altar of burnt-offering of shittim wood: five cubits was the length of it, and five cubits the breadth of it; it was foursquare; and its hight was three cubits.
It was foursquare; they made the breast-plate double: a span was the length of it, and a span the breadth of it, being doubled.