13-14. “These are the dimensions of the altar, using the long (twenty-one-inch) ruler. The gutter at its base is twenty-one inches deep and twenty-one inches wide, with a four-inch lip around its edge.
14-15. “The height of the altar is three and a half feet from the base to the first ledge and twenty inches wide. From the first ledge to the second ledge it is seven feet high and twenty-one inches wide. The altar hearth is another seven feet high. Four horns stick upward from the hearth twenty-one inches high.
16-17. “The top of the altar, the hearth, is square, twenty-one by twenty-one feet. The upper ledge is also square, twenty-four and a half feet on each side, with a ten-and-a-half-inch lip and a twenty-one-inch-wide gutter all the way around.“The steps of the altar ascend from the east.”