'One month old' in the Bible

If the person is one month old up to five years old, the conversion value of the male is five shekels of silver, and for the female the conversion value is three shekels of silver.

“Register the Levites by their ancestral houses and their clans. You are to register every male one month old or more.”

Those registered, counting every male one month old or more, numbered 7,500.

Counting every male one month old or more, there were 8,600 responsible for the duties of the sanctuary.

Those registered, counting every male one month old or more, numbered 6,200.

The total number of all the Levite males one month old or more that Moses and Aaron registered by their clans at the Lord’s command was 22,000.

The Lord told Moses: “Register every firstborn male of the Israelites one month old or more, and list their names.

The total number of the firstborn males one month old or more listed by name was 22,273.

As to their price of redemption, from {a one-month-old} you will redeem them according to your proper value, five shekels of silver according to the shekel of the sanctuary, which [is] twenty gerah.

Those registered were 23,000, every male one month old or more; they were not registered among the other Israelites, because no inheritance was given to them among the Israelites.