Aaron shall burn thereon sweet incense (Heb., incense of spices) every morning. — On the composition of the incense, see Exodus 30:34-35. That the offering of incense regularly accompanied both the morning and evening sacrifice appears from Psalms 141:2; Luke 1:10. That it was symbolical of prayer may be gathered both from those passages and also from Revelation 5:8; Revelation 8:3-4.
When he dresseth the lamps. — Comp. Exodus 27:21.