en_tn_condensed/1ch/23/24.md

These were Levi's descendants corresponding to their clans. They were the leaders, counted and listed by name in the census, 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/jit/figs-activepassive)

from twenty years old and upward

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