عَزْرَا 6:18

وَأَقَامُوا ٱلْكَهَنَةَ فِي فِرَقِهِمْ وَٱللَّاوِيِّينَ فِي أَقْسَامِهِمْ عَلَى خِدْمَةِ ٱللهِ ٱلَّتِي فِي أُورُشَلِيمَ، كَمَا هُوَ مَكْتُوبٌ فِي سِفْرِ مُوسَى.

And they set the priests in their divisions, and the Levites in their courses, for the service of God, which is at Jerusalem; as it is written in the book of Moses.