These are the dimensions of the altar by cubits (the cubit being one cubit and a handbreadth): its base shall be one cubit high, a and one cubit wide, with a rim of one span around its edge. This shall be the height of the altar:
From the base on the ground to the lower ledge, two cubits, with a width of one cubit; and from the smaller ledge to the larger ledge, four cubits, with a width of one cubit;
and the altar hearth, four cubits; and from the altar hearth projecting upward, four horns.
The altar hearth shall be square, twelve cubits long by twelve wide.
The ledge also shall be square, fourteen cubits long by fourteen wide, with a rim around it half a cubit wide, and its surrounding base, one cubit. Its steps shall face east.
Then he said to me: Mortal, thus says the Lord God: These are the ordinances for the altar: On the day when it is erected for offering burnt offerings upon it and for dashing blood against it,
you shall give to the levitical priests of the family of Zadok, who draw near to me to minister to me, says the Lord God, a bull for a sin offering.
And you shall take some of its blood, and put it on the four horns of the altar, and on the four corners of the ledge, and upon the rim all around; thus you shall purify it and make atonement for it.
You shall also take the bull of the sin offering, and it shall be burnt in the appointed place belonging to the temple, outside the sacred area.
On the second day you shall offer a male goat without blemish for a sin offering; and the altar shall be purified, as it was purified with the bull.
When you have finished purifying it, you shall offer a bull without blemish and a ram from the flock without blemish.
You shall present them before the Lord, and the priests shall throw salt on them and offer them up as a burnt offering to the Lord.
For seven days you shall provide daily a goat for a sin offering; also a bull and a ram from the flock, without blemish, shall be provided.
Seven days shall they make atonement for the altar and cleanse it, and so consecrate it.
When these days are over, then from the eighth day onward the priests shall offer upon the altar your burnt offerings and your offerings of well-being; and I will accept you, says the Lord God.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (New Revised Standard Bible Version Online)