I commanded the Levites - At first Nehemiah had employed his own retinue Nehemiah 13:19 in the work of keeping the gates. He now assigned the duty to the Levites, as one which properly belonged to them, since the object of the regulation was the due observance of the Sabbath.
Related Commentaries of Nehemiah 13:22
Nehemiah 13:22
22 And I commanded the Levites that they should cleanse themselves, and that they should come and keep the gates, to sanctify the sabbath day. Remember me, O my God, concerning this also, and spare me according to the greatnessg of thy mercy.