24:18-25 God's encouraging us to offer to him spiritual sacrifices, is an evidence of his reconciling us to himself. David purchased the ground to build the altar. God hates robbery for burnt-offering. Those know not what religion is, who chiefly care to make it cheap and easy to themselves, and who are best pleased with that which costs them least pains or money. For what have we our substance, but to honour God with it; and how can it be better bestowed? See the building of the altar, and the offering proper sacrifices upon it. Burnt-offerings to the glory of God's justice; peace-offerings to the glory of his mercy. Christ is our Altar, our Sacrifice; in him alone we may expect to escape his wrath, and to find favour with God. Death is destroying all around, in so many forms, and so suddenly, that it is madness not to expect and prepare for the close of life.

21. to build an altar unto the Lord, that the plague may be stayed—It is evident that the plague was not stayed till after the altar was built, and the sacrifice offered, so that what is related (2Sa 24:16) was by anticipation. Previous to the offering of this sacrifice, he had seen the destroying angel as well as offered the intercessory prayer (2Sa 24:17). This was a sacrifice of expiation; and the reason why he was allowed to offer it on Mount Moriah was partly in gracious consideration to his fear of repairing to Gibeon (1Ch 21:29, 30), and partly in anticipation of the removal of the tabernacle and the erection of the temple there (2Ch 3:1).