en_tn/num/04/38.md

The descendants of Gershon were counted

AT: "Moses and Aaron counted the descendants of Gershon" (See: rc://en/ta/man/translate/figs-activepassive)

from thirty to fifty years old

AT: "from 30 to 50 years old" (See: rc://en/ta/man/translate/translate-numbers)

join the company to serve in the tent of meeting

See how you translated this in Numbers 4:1.

counted by their clans

AT: "whom Moses and Aaron counted by their clans" (See: rc://en/ta/man/translate/figs-activepassive)