The altar which is now described in its measurement, was previously mentioned in chapter xl:47. The altar according to this description, is composed of four square layers (probably stones) one above another, decreasing in extent and increasing in thickness; the top is a square of twelve cubits. This is called "the altar hearth" or "the hearth of God." The three words translated in the authorized version by altar are not the same in the original. In verse 13 the word is "mizbeach." This word is used many times in the Hebrew Bible; it means "slaughter-place." In verse 15 two words are used which are nowhere else found in connection with an altar. The one is "_Harel_" which means "the mountain of God;" and the other "_Ariel_" the meaning of this is different from Ariel in Isa. xxix:1[48] when it is used for Jerusalem as "the lion of God." Gesenius translated it "the hearth," and still better is "the hearth of God." Upward from this hearth were four horns. The Septuagint gives the height of these horns as one cubit each. While in Exodus xx:25 steps are prohibited for the altar, this altar has steps which look toward the east. This great burnt offering altar, standing in the center of the inner court before the house, will be the central place of worship in this future temple. [48] The word "Ariel" as used in Ezekiel has one more letter than the word in Isaiah xxix. The ordinances of this burnt offering altar in that future day are given to the prophet, the Lord Jehovah addressing Ezekiel as "Son of Man." Burnt offerings will be brought upon it and blood sprinkled. The priests, the Levites of the seed of Zadok[49] will minister unto the Lord Jehovah. What is first described is a kind of consecration or dedication of this burnt offering altar, after which the general sacrifices begin (verse 27). First a young bullock is brought for a sin offering and the blood is applied to the altar and the four horns. For seven days these offerings for purging and cleansing continue and with the eighth day the burnt offerings and peace offerings are to be made by the people. [49] Zadok means "just." He was the successor of Abiathar in the priesthood--the son of Ahitub of the family of Eleazar (2 Sam. viii:17; 1 Kings ii:27, 35).