2 Chronicles 35:10
So the service was prepared, and the priests stood in their place, and the Levites, likewise, in their courses, according to the king's commandment.
2 Chronicles 30:16
And they put themselves in order according to the ordinance, according to the law of Moses, the man of God; the priests sprinkled the blood, which they received of the hands of the Levites.
Ezra 6:18
And they set the priests in their divisions and the Levites in their courses over the work of God, which is at Jerusalem, as it is written in the book of Moses.
2 Chronicles 35:4-5
and prepare yourselves by the houses of your fathers, after your courses, according to the writing of David, king of Israel, and according to the writing of Solomon, his son.