Keep the gates. The assignment of his own servants to watch the gates (v. 19) on the Sabbath was probably temporary, while the more permanent charge was committed to those Levites whom Nehemiah had recently brought back to the city (v. 11). This duty had been entrusted to them when the gates were first set up (ch. 7:1), but had been neglected when the Levites, deprived of financial support, had left their duties in Jerusalem to make a living from the soil. After having engaged for some time in secular work, the Levites had to cleanse themselves before again attending to sacred duties.
Remember me. See on vs. 14, 31.