7 Aaron shall offer fragrant incense on it; every morning when he dresses the lamps he shall offer it, 8 and when Aaron sets up the lamps in the evening, he shall offer it, a regular incense offering before the Lord throughout your generations. 9 You shall not offer unholy incense on it, or a burnt offering, or a grain offering; and you shall not pour a drink offering on it.
Matthew Henry's Commentary on Exodus 30:7-9
Commentary on Exodus 30:1-10
(Read Exodus 30:1-10)
The altar of incense represented the Son of God in his human nature, and the incense burned thereon typified his pleading for his people. The continual intercession of Christ was represented by the daily burning of incense thereon, morning and evening. Once every year the blood of the atonement was to be applied to it, denoting that the intercession of Christ has all its virtue from his sufferings on earth, and that we need no other sacrifice or intercessor but Christ alone.