King James Version
From twenty years old and upward, all that are able to go forth to war in Israel: thou and Aaron shall number them by their armies.New International Version
You and Aaron are to number by their divisions all the men in Israel twenty years old or more who are able to serve in the army.Catholic Public Domain Version
from twenty years and above, of all the able-bodied men out of Israel, and you shall number them by their companies, you and Aaron