This may perhaps be said to be the most perfect earthly shape of a plane (the 'cube' being perfection for a solid). See 'four' under NUMBFRS. It was the shape of the brazen altar, Exodus 27:1; Exodus 38:1; the breastplate, Exodus 28:16; Exodus 39:9; and the altar of incense, Exodus 30:2; Exodus 37:25 . Apparently it was the shape of the 'panels' of the base of the molten sea in Solomon's temple, 1 Kings 7:31; also of the court of the future temple, Ezekiel 40:47; the altar of the same, Ezekiel 43:16; the portion of the land offered as a holy oblation, Ezekiel 48:20; for the sanctuary, Ezekiel 45:2; and for the city, Ezekiel 48:16 .