And the altar shall be twelve cubits long, twelve broad, square in the four squares thereof.

And the Ariel was twelve cubits long, and twelve cubits broad, foursquare, with equal sides.

And the altar is twelve long by twelve broad, square in its four squares.

And the fireplace is twelve cubits long and twelve cubits wide, square on its four sides.

And the hearth was twelve cubits in length by twelve cubits in width, foursquare, with equal sides.

altar - Ariel was to be an exact square on all sides. Compare Exodus 27:1; Revelation 21:16.

And the altar shall be twelve cubits long, twelve broad,.... The length of it, from east to west, was twelve cubits; and the breadth, from north to south, was the same; so that it was a proper foursquare, as follows: Christ the altar, or the doctrine of his sacrifice and satisfaction for the sins of men, is the doctrine of the twelve apostles of Christ, and embraced by the twelve times twelve, the 144,000 that belong unto him:
square in the four squares thereof; as the altar in the tabernacle, and Solomon's temple, were, Exodus 27:1, denoting the largeness of Christ's sacrifice, the perfection of it, and its stability and permanency, to take away the sin, of his people.

square in the four squares--square on the four sides of its squares [FAIRBAIRN].