I. The orders given concerning the altar of incense are, 1. That it was to be made of wood, and covered with gold, pure gold, about a yard high and half a yard square, with horns at the corners, a golden cornice round it, with rings and staves of gold, for the convenience of carrying it, Exo 30:1-5. It does not appear that there was any grate to this altar for the ashes to fall into, that they might be taken away; but, when they burnt incense, a golden censer was brought with coals in it, and placed upon the altar, and in that censer the incense was burnt, and with it all the coals were taken away, so that no coals nor ashes fell upon the altar. The measure of the altar of incense in Ezekiel's temple is double to what it is here (Eze 41:22), and it is there called an altar of wood, and there is no mention of gold, to signify that the incense, in gospel times, should be spiritual, the worship plain, and the service of God enlarged, for in every place incense should be offered, Mal 1:11. 2. That it was to be placed before the veil, on the outside of that partition, but before the mercy-seat, which was within the veil, Exo 30:6. For though he that ministered at the altar could not see the mercy-seat, the veil interposing, yet he must look towards it, and direct his incense that way, to teach us that though we cannot with our bodily eyes see the throne of grace, that blessed mercy-seat (for it is such a throne of glory that God, in compassion to us, holds back the face of it, and spreads a cloud upon it), yet we must in prayer by faith set ourselves before it, direct our prayer, and look up. 3. That Aaron was to burn sweet incense upon this altar, every morning and every evening, about half a pound at a time, which was intended, not only to take away the ill smell of the flesh that was burnt daily on the brazen altar, but for the honour of God, and to show the acceptableness of his people's services to him, and the pleasure which they should take in ministering to him, Exo 30:7, Exo 30:8. As by the offerings on the brazen altar satisfaction was made for what had been done displeasing to God, so, by the offering on this, what they did well was, as it were, recommended to the divine acceptance; for our two great concerns with God are to be acquitted from guilt and accepted as righteous in his sight. 4. That nothing was to be offered upon it but incense, nor any incense but that which was appointed, Exo 30:9. God will have his own service done according to his own appointment, and not otherwise. 5. That this altar should be purified with the blood of the sin-offering put upon the horns of it, every year, upon the day of atonement, Exo 30:10. See Lev 16:18, Lev 16:19. The high priest was to take this in his way, as he came out from the holy of holies. This was to intimate to them that the sins of the priests who ministered at this altar, and of the people for whom they ministered, put a ceremonial impurity upon it, from which it must be cleansed by the blood of atonement.
II. This incense-altar typified, 1. The mediation of Christ. The brazen altar in the court was a type of Christ dying on earth; the golden altar in the sanctuary was a type of Christ interceding in heaven, in virtue of his satisfaction. This altar was before the mercy-seat; for Christ always appears in the presence of God for us; he is our advocate with the father (Jo1 2:1), and his intercession is unto God of a sweet-smelling savour. This altar had a crown fixed to it; for Christ intercedes as king. Father, I will, Joh 17:24. 2. The devotions of the saints, whose prayers are said to be set forth before God as incense, Psa 141:2. As the smoke of the incense ascended, so much our desires towards God rise in prayer, being kindled with the fire of holy love and other pious affections. When the priest was burning incense the people were praying (Luk 1:10), to signify that prayer is the true incense. This incense was offered daily, it was a perpetual incense (Exo 30:8); for we must pray always, that is, we must keep up stated times for prayer every day, morning and evening, at least, and never omit it, but thus pray without ceasing. The lamps were dressed or lighted at the same time that the incense was burnt, to teach us that the reading of the scriptures (which are our light and lamp) is a part of our daily work, and should ordinarily accompany our prayers and praises. When we speak to God we must hear what God says to us, and thus the communion is complete. The devotions of sanctified souls are well-pleasing to God, of a sweet-smelling savour; the prayers of saints are compared to sweet odours (Rev 5:8), but it is the incense which Christ adds to them that makes them acceptable (Rev 8:3), and his blood that atones for the guilt which cleaves to our best services. And, if the heart and life be not holy, even incense is an abomination (Isa 1:13), and he that offers it is as if he blessed an idol, Isa 66:3.

Four-square - That is, on the upper or under surface, as it showed four equal sides; but it was twice as high as it was broad, being twenty-one inches broad, and three feet six inches high. It was called, not only the altar of incense, but also the golden altar, Num 4:11. For the crown, horns, staves, etc., see on the altar of burnt-offering, Exo 27:1 (note), etc.

And two golden rings shalt thou make to it under the crown of it,.... The crown was on the top of the altar, at the edge of it all around; and just underneath it were two rings of gold, two on each side:

by the two corners thereof, upon the two sides of it shall thou make them; at each corner a ring, and at each side; the use of them follows:

and they shall be for places for the staves to bear it withal; these rings were for the staves to be put into when the altar was to be carried from place to place, as it was in the wilderness, during the travels of Israel there; and this signifies that Christ never leaves his people; when they are in the wilderness he is with them, interceding for them, providing all things necessary for their food, safety, and protection, Rev 12:14.

foursquare--the meaning of which is not that it was to be entirely of a cubical form, but that upon its upper and under surface, it showed four equal sides. It was twice as high as it was broad, being twenty-one inches broad and three feet six inches high. It had "horns"; its top or flat surface was surmounted by an ornamental ledge or rim, called a crown, and it was furnished at the sides with rings for carriage. Its only accompanying piece of furniture was a golden censer or pan, in which the incense was set fire to upon the altar. Hence it was called the altar of incense, or the "golden altar" [Exo 39:38; Exo 40:26], from the profuse degree in which it was gilded or overlaid with the precious metal. This splendor was adapted to the early age of the church, but in later times, when the worship was to be more spiritual, the altar of incense is prophetically described as not of gold but of wood, and double the size of that in the tabernacle, because the church should be vastly extended (Mal 1:11).