Numbers 1:18
And they assembled all the congregation together on the first day of the second month, and they declared their pedigrees after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, by their polls.
Cross-reference
Numbers 1:2 gives the command for the census by families and age — Numbers 1:18 is the direct execution of that command.
Numbers 1:20-54 lists the census results by tribe — the outcome of the genealogical declaration in Numbers 1:18.
Exodus 30:14 sets age twenty for the census offering — the same age used in Numbers 1:18 for registration.
1 Chronicles 23:24 records Levites registered from twenty years old — echoing the same age and genealogical method as Numbers.
Hebrews 7:3 highlights Melchizedek’s lack of genealogy — contrasting with the careful genealogical tracing in Numbers.
Ezra 2:59 describes people unable to prove their genealogy — echoing the genealogical declaration in Numbers, now faced with a challenge.
Hebrews 7:6 notes Melchizedek’s descent is not from Israel — contrasting with the genealogical tracing by families in Numbers.
Nehemiah 7:61 repeats Ezra’s list of those without proven genealogy — another parallel to the genealogical record in Numbers.