1 Chronicles 23:3

Now ... and — i.e., after the council had agreed upon it.

The Levites were numbered from the age of thirty years and upward. — A census like that which Moses instituted (Numbers 4:3; Numbers 4:23; Numbers 4:30, &c.), of all Levites “from thirty years old and upward unto fifty years,” for the work of the Tabernacle.

By their polls, man by man. — Lit., As to their skulls, as to men. The second phrase defines the first, and excludes women and children.