Charles Ellicott Commentary Nehemiah 13:22

"And I commanded the Levites that they should purify themselves, and that they should come and keep the gates, to sanctify the sabbath day. Remember unto me, O my God, this also, and spare me according to the greatness of thy lovingkindness." — Nehemiah 13:22 (ASV)

Cleanse themselves. —As for a sacred duty, not without reference to their past neglect, which required to be forgiven. This was a high tribute to the Sabbath ordinance, and as such in harmony with all the details of this episode.

Remember me. —In this prayer also Nehemiah commits his fidelity to the merciful assessment of God. But something in connection with the Sabbath, or with his retrospect of his own conduct, gives the passing prayer a peculiar pathos of humility.