As his father David had decreed, Solomon ¹  appointed the divisions of the priests to do their assigned tasks, the Levitical orders to lead worship and help the priests with their daily tasks, ²  and the divisions of the gatekeepers to serve at their assigned gates. ³  This was what David the man of God had ordered. ⁴ 

The musicians, the descendants of Asaph, manned their posts, as prescribed by David, Asaph, Heman, and Jeduthun the king’s prophet. ¹  The guards at the various gates did not need to leave their posts, for their fellow Levites made preparations for them.