'One by one' in the Bible

“Take a census of the entire Israelite community by their clans and their ancestral houses, counting the names of every male one by one.

and they assembled the whole community on the first day of the second month. They recorded their ancestry by their clans and their ancestral houses, counting one by one the names of those 20 years old or more,

The descendants of Reuben, the firstborn of Israel: according to their family records by their clans and their ancestral houses, counting one by one the names of every male 20 years old or more, everyone who could serve in the army,

The descendants of Simeon: according to their family records by their clans and their ancestral houses, those registered counting one by one the names of every male 20 years old or more, everyone who could serve in the army,