Numbers 1:1-4 NLT

A year after Israel’s departure from Egypt, the LORD spoke to Moses in the Tabernacle in the wilderness of Sinai. On the first day of the second month of that year he said, “From the whole community of Israel, record the names of all the warriors by their clans and families. List all the men twenty years old or older who are able to go to war. You and Aaron must register the troops, and you will be assisted by one family leader from each tribe.