Ezekiel 43:12-14 American Standard Version (ASV)
12 This is the law of the house: upon the top of the mountain the whole limit thereof round about shall be most holy. Behold, this is the law of the house.
13 And these are the measures of the altar by cubits (the cubit is a cubit and a handbreadth): the [a]bottom shall be a cubit, and the breadth a cubit, and the border thereof by the edge thereof round about a span; and this shall be the [b]base of the altar. 14 And from the bottom [c]upon the ground to the lower ledge shall be two cubits, and the breadth one cubit; and from the lesser ledge to the greater ledge shall be four cubits, and the breadth a cubit.