“These were the descendants of Levi by their families—the heads of families as they were registered under their names and counted individually, that is, the workers twenty years old or more who served in the temple of the Lord.”

‭‭1 Chronicles‬ ‭23‬:‭24‬ ‭NIV‬‬

https://bible.com/bible/111/1ch.23.24.NIV