Nehemiah 7:3-4

3Then I said to them, “The gates of Jerusalem are not to be opened until the sun is hot, and while they are standing guard, the gatekeepers are to 1keep the doors shut and bolted. Also appoint guards from the inhabitants of Jerusalem, each at his post, and each in front of his own house.” 4Now the city was large and spacious, but the people in it were few and the houses were not built.