The census of the Levites in Numbers 4 follows this logical structure: Commissioning the census > Taking the census > Summarizing the census.

And then it is arranged in a literary parallelism:

-A- V1-4a – Count Kohathites.
---B- V4b-20 – Service of Kohathites
-A- V21-23 – Count Gershonites
---B- V24-28 – Service of Gershonites
-A- V29-30 – Count Merarites
---B- V31-33 – Service of Merarites

#biblepatterns