Exodus 30:34-36

And Jehovah said unto Moses, Take unto thee sweet spices, stacte, and onycha, and galbanum; sweet spices with pure frankincense: of each shall there be a like weight;

and thou shalt make of it incense, a perfume after the art of the perfumer, seasoned with salt, pure and holy:

and thou shalt beat some of it very small, and put of it before the testimony in the tent of meeting, where I will meet with thee: it shall be unto you most holy.