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.
Ver. 18. For the service of God] According to that, Exodus 12:25, Ye shall keep this service, where the same word (Gnabhodah) is used that elsewhere serveth to set forth their servile service, their bondage in Egypt. God lets them know that they must serve still, though another master, and after another manner. So Christ calleth upon his, to take his yoke upon them: free though they be, yet they must not look to be yokeless, lawless, aweless, but to serve God with reverence and godly fear, Hebrews 12:28 .
As it is written in the book of Moses] Moses then was the penman of the Pentateuch, and not Ezra, as some have said; grounding upon that Apocryphal Esdras.