27:1-8 In the court before the tabernacle, where the people attended, was an altar, to which they must bring their sacrifices, and on which their priests must offer them to God. It was of wood overlaid with brass. A grate of brass was let into the hollow of the altar, about the middle of which the fire was kept, and the sacrifice burnt. It was made of net-work like a sieve, and hung hollow, that the ashes might fall through. This brazen altar was a type of Christ dying to make atonement for our sins. The wood had been consumed by the fire from heaven, if it had not been secured by the brass: nor could the human nature of Christ have borne the wrath of God, if it had not been supported by Divine power.And the staves shall be put into the rings,.... Not into the rings of the grate, as Jarchi and others: though Dr. Lightfoot (f) thinks these came out of each corner through the altar frame, and hung out of the frame, and in these the staves being put, made the frame and the grate sure together, and so they were also carried together; but it seems rather, that as the grate had rings peculiar to that, to let it down and take it up, and with which it was carried, with a purple cloth covered over it, Numbers 4:13 so the altar had rings peculiar to that on the sides of it, into which these staves were put:

and the staves shall be upon the two sides of the altar, to bear it; and which shows that the rings into which these were put were not the rings of the grate, for they were at the four corners of it, which hung upon the four horns of it; whereas the staves were on the two sides of it, in order to bear it from place to place, which was done by the Levites; and was typical of the ministers of the Gospel bearing the name of Christ, and spreading the doctrine of his sacrifice and satisfaction, in the world, which is the main and fundamental doctrine of the Gospel.

(f) Works, vol. 1. p. 722.