And they set the priests - With this verse the Chaldee or Aramitic part of this chapter ends.

And they set the priests in their divisions, and the Levites in their courses, for the service of God which is at Jerusalem,.... All in their proper classes and courses, to do the work of the temple at Jerusalem in their turns:

as it is written in the book of Moses; see Numbers 3:6, from hence it is plain the Pentateuch was not written by Ezra, as suspected by Spinosa (m), but by Moses; see the argument of the book of Genesis. See Gill on Genesis 1:1.

(m) Tract. Theolog. Polit. c. 8. p. 163.

At the same time, the priests and Levites were appointed, according to their classes and divisions, to the service of the temple, that they might henceforth fulfil their office, each class in its week (2 Chronicles 23:4; 2 Kings 11:9). והקימוּ corresponds with the Hebrew ויּעמידוּ, Ezra 3:8, and elsewhere. As Bertheau justly remarks, "The services of public worship, which after the completion of the temple were to be performed by the priests and Levites, according to ancient ordinance, are here spoken of." With these words the Chaldee section closes.

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.

as it is...: Chaldee, according to the writing

18. they set the priests in their divisions, and the Levites in their courses . as it is written in the book of Moses-Although David arranged the priests and Levites in courses according to their families, it was Moses who assigned to the priests and Levites their rights and privileges, their stations and several duties.

6:13-22 The gospel church, that spiritual temple, is long in the building, but it will be finished at last, when the mystical body is completed. Every believer is a living temple, building up himself in his most holy faith: much opposition is given to this work by Satan and our own corruptions. We trifle, and proceed in it with many stops and pauses; but He that has begun the good work, will see it performed. Then spirits of just men will be made perfect. By getting their sins taken away, the Jews would free themselves from the sting of their late troubles. Their service was with joy. Let us welcome holy ordinances with joy, and serve the Lord with gladness.