Shabbethai and Jozabad were prominent leaders among the Levites who carried significant managerial and organizational responsibilities to ensure the proper functioning of the Temple. Their specific duty involved overseeing the external labor required for the House of God. The primary approach among commentators is that this refers to maintenance and supply operations conducted outside the Temple but intended for its direct use. This included gathering wood for the altar, as well as procuring stones and building materials to repair and strengthen the physical structure [רש״י, מצודת דוד].
Other perspectives focus on the exact geographic location of this labor. One view suggests that these operations took place entirely outside the city of Jerusalem to gather resources for the Temple [אבן עזרא]. Conversely, another understanding places this work inside the Temple Mount complex, but strictly outside the main sanctuary building itself, such as in the courtyards where the priests operated [רלב״ג].
A different approach suggests that this external work did not involve physical construction or the gathering of raw materials at all. Instead, it refers to broad administrative duties. In this capacity, the Levite leaders served as officers and managers who maintained order and supervised the Temple treasuries [ביאור שטיינזלץ].