Exodus 30:35

And thou shalt make it a perfume, a confection after the art of the apothecary, tempered together, pure and holy:

Cross-references

Exodus 30:25 gives the recipe for holy anointing oil, made by a perfumer just like the incense here—both are sacred compounds.

1 Chronicles 9:30 mentions priests making the ointment of spices, reflecting the same priestly work of compounding sacred aromatics.