7 And Aaron shall burn thereon incense of sweet spices: every morning, when he dresseth the lamps, he shall burn it. 8 And when Aaron lighteth the lamps at even, he shall burn it, a perpetual incense before Jehovah throughout your generations. 9 Ye shall offer no strange incense thereon, nor burnt-offering, nor meal-offering; and ye shall pour no drink-offering thereon.
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.