The porters and the singers and the Levites. The porters and the singers were themselves Levites, but are often distinguished from their brethren, who had no such special office (see Ezra 2:40-42, Ezra 2:70; Ezra 7:24; Ezra 10:23, Ezra 10:24; Nehemiah 7:43-45, Nehemiah 7:73; Nehemiah 10:28, etc.). Nehemiah's choice of Levites to guard the gates of Jerusalem may seem strange; but we must remember—
1. That the priests and Levites formed nearly one half the population of Jerusalem (Nehemiah 11:6-19 compared with 1 Chronicles 9:9-22).
2. That the office of guarding the temple gates had always been discharged by Levites (1 Chronicles 9:17-22; 1 Chronicles 26:12-19).