(18) In the day when they shall make it.--This looks to the future, and implies that the whole structure of the Temple, and its acceptance by the manifestation of the Divine glory, though necessarily represented in the vision as already done, were yet in the future. The phrase, "in the day when they shall make it," is intended only to require the consecration of the altar before it is used. The actual time occupied by the consecration (Ezekiel 43:25-26) was to be seven days, as in Exodus 29:37.

Verse 18. - The ordinances of the altar. These were not the regulations for the sacrificial worship to be afterwards performed upon this altar, but the rites to be observed at its consecration when the day should arrive for its construction. As the altar in the tabernacle (Exodus 29:1-46; Leviticus 8:11-33), and that in Solomon's temple (1 Kings 8:63-66; 2 Chronicles 7:4-10), so was this in Ezekiel's "house" dedicated by a special ceremonial before being brought into ordinary use. The particular ritual observed by Solomon is not described in detail; but a comparison between that enjoined upon and practiced by Moses with that revealed to and published by Ezekiel shows that while in some respects they agreed, in other important particulars they differed. In both the ceremony largely consisted in offering sacrifice and smearing blood, and lasted seven days; but in the former the ceremony was performed exclusively by Moses, consisted, in addition to the above, of an anointing of the altar, the holy utensils, and the tabernacle itself with oil, and was associated with the consecration of the priests; whereas in the latter, in addition to some variations in the sacrificial victims, which will be noted in the course of exposition, the priests should bear an active part - there should be no anointing with oil, and no consecration of the priests, the priesthood being assumed as already existing. If in Ezekiel's ritual there was no mention of a cleansing of the sanctuary (that of Ezekiel 45:18 referring to a special ease), but only of the altar, that was sufficiently explained by the circumstance that Jehovah was already in the "house." The final clause, to offer burnt offerings thereon, and to sprinkle blood thereon, indicates the purpose for which the altar was to be used.

43:1-27 After Ezekiel had surveyed the temple of God, he had a vision of the glory of God. When Christ crucified, and the things freely given to us of God, through Him, are shown to us by the Holy Ghost, they make us ashamed for our sins. This frame of mind prepares us for fuller discoveries of the mysteries of redeeming love; and the whole of the Scriptures should be opened and applied, that men may see their sins, and repent of them. We are not now to offer any atoning sacrifices, for by one offering Christ has perfected for ever those that are sanctified, Heb 10:14; but the sprinkling of his blood is needful in all our approaches to God the Father. Our best services can be accepted only as sprinkled with the blood which cleanses from all sin.And he said unto me, son of man, thus saith the Lord God,.... This is the voice of the Lord continued, speaking out of the house to the prophet; see Ezekiel 43:6,

these are the ordinances of the altar: not what go before, concerning the measures of it, but what follow, concerning the sacrifices to be offered on it:

in the day when they shall make it, to offer burnt offerings thereon, and sprinkle blood thereon; this plainly shows that this altar is the altar of burnt offerings; such were to be offered on it, and the blood of them to be sprinkled thereon, as follows; that is, upon the horns, corners, and border of it, Ezekiel 43:20.