ASV

besides them that were reckoned by genealogy of males, from three years old and upward, even every one that entered into the house of Jehovah, as the duty of every day required, for their service in their offices according to their courses;

KJV

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;