en_tn/1ch/23/24.md

These were Levi's descendants corresponding to their clans. They were the leaders, counted and listed by name, of the clans

This can be stated in active form. Alternate translation: "These were the names of Levi's descendants and their families, whom David's men counted and listed. They were the leaders of the clans" (See: rc://en/ta/man/translate/figs-activepassive)

from twenty years old and upward

"from 20 years old and older" (See: rc://en/ta/man/translate/translate-numbers)