Beside their genealogy. — The verse is a parenthesis stating an exception, and should rather be rendered, “apart from their register of males from three years old and upward (to wit, the register) of all that came into the house of Jehovah for the daily portion (literally, for a day’s matter in its day; 2 Chronicles 8:13; Nehemiah 11:23) for their service in their offices according to their divisions.” The meaning is that the Levites who were on duty in the Temple, and whose names were registered as such, along with their male children of three years old and upwards, were not provided for by Cononiah and his associates, as they received their daily portion in the sanctuary itself. Children, it appears, were allowed to accompany their fathers to the Temple, and to eat with them of the sacrifices.
Related Commentaries of 2 Chronicles 31:16
2 Chronicles 31:16
16 Beside their genealogy of males, from three years old and upward, even unto every one that entereth into the house of the LORD, his daily portion for their service in their charges according to their courses;