Verse 10. - For dedicating of the altar. The altar was "dedicated" in the sense of being consecrated, by the anointing with the sacred oil and with the blood of the appointed sacrifices (Leviticus 8:10, 15). But it could still be "dedicated" in another sense by the sacrificial gifts, freely offered for the purpose, of the people. No rules appear to have been made as to dedications, but there is an allusion in Deuteronomy 20:5 to the dedication of houses, which may have been accompanied with religions rites, and we know that as a fact the temple was dedicated by Solomon (2 Chronicles 7:5), and re-dedicated by the Maccabees (1 Macc. 4:54, sq.), and the wall of Jerusalem was dedicated by Nehemiah (Nehemiah 12:27, sq.). The Septuagint has here εἰς τὸν ἐγκαινισμὸν, as in 1 Macc. 4:56, and cf. John 10:22. Offered their offering before the altar. This assuredly points to an offering made in common, and made at one time, via, on the day when the altar was anointed. It may be that the twelve princes all came for the purpose of making their offerings on that day, the day they would naturally choose for the purpose; but on account of the great number of other sacrifices, and the fewness of the priests, their offerings were postponed by the Divine command, and were actually received later. Thus in will and in meaning the offerings were made "on the day" of the consecration, but were publicly and solemnly received at some subsequent time.

7:10-89 The princes and great men were most forward in the service of God. Here is an example to those in authority, and of the highest rank; they ought to use their honour and power, their estate and interest, to promote religion and the service of God in the places where they live. Though it was a time of joy and rejoicing, yet still, in the midst of their sacrifices, we find a sin-offering. As, in our best services, we are conscious that there is sin, there should be repentance, even in our most joyful services. In all approaches to God we must by faith look to Christ as the Sin-offering. They brought their offerings each on a day. God's work should not be done confusedly, or in a hurry; take time, and we shall have done the sooner, or, at least, we shall have done the better. If services are to be done for twelve days together, we must not call it a task and a burden. All their offerings were the same; all the tribes of Israel had an equal share in the altar, and an equal interest in the sacrifices offered upon it. He who now spake to Moses, as the Shechinah or Divine Majesty, from between the Cherubim, was the Eternal Word, the second Person in the Trinity; for all God's communion with man is by his Son, by whom he made the world, and rules the church, who is the same yesterday, to-day, and for ever.And the princes offered for dedicating of the altar,.... For setting it apart to sacred use and service, even the altar of burnt offering; or rather after it had bean sanctified and set apart, when it began to be made use of for sacrifice:

in the day that it was anointed; with the anointing oil, whereby it was devoted to sacred service:

even the princes offered their offering before the altar; the altar of burnt offering; they brought their vessels for the service of it, and the creatures for sacrifice, and set them before it; signifying what they meant, thereby, that the silver and golden vessels were for the use of it, and the beasts for sacrifice to be offered up on it: and here Jarchi also observes, that Moses would not receive their offering until he knew the mind of God about it, and it was declared to him from himself.