2 Chronicles 8:14-15

In assigning the priests to their duties, Solomon followed the regulations of his father, David. He also assigned the Levites to lead the people in praise and to assist the priests in their daily duties. And he assigned the gatekeepers to their gates by their divisions, following the commands of David, the man of God. Solomon did not deviate in any way from David’s commands concerning the priests and Levites and the treasuries.