25 And he made the incense altar of shittim wood: the length of it was a cubit, and the breadth of it a cubit; it was foursquare; and two cubits was the height of it; the horns thereof were of the same.

26 And he overlaid it with pure gold, both the top of it, and the sides thereof round about, and the horns of it: also he made unto it a crown of gold round about.

27 And he made two rings of gold for it under the crown thereof, by the two corners of it, upon the two sides thereof, to be places for the staves to bear it withal.

28 And he made the staves of shittim wood, and overlaid them with gold.

29 And he made the holy anointing oil, and the pure incense of sweet spices, according to the work of the apothecary.

We hear of the construction of the incense altar, which completes all of the furniture of the tabernacle, and then we move on to the formulating of the anointing oil and the spices, which would be used for certain rituals within the tabernacle. Thus, we finish the chapter by concluding the house of the Lord, and next chapter we will go into the elements that were in the courtyard.

Reading these verses, it occurred to me that the holy anointing oil and the sweet spices were two things that the priests would run out of and have to have replaced. I wonder if there was any specific instruction as to how and where new batches could be created and who could do it. If so, we do not have those records.