Sirach 33:26-28

New Revised Standard Version, Anglicised

²⁶ Set your slave to work, and you will find rest;
    leave his hands idle, and he will seek liberty.
²⁷ Yoke and thong will bow the neck,
    and for a wicked slave there are racks and tortures.
²⁸ Put him to work, in order that he may not be idle,