V.2 Hanani was given charge over Jerusalem. It does not say that he was rich or wise, or skillful. But he was faithful and he feared God.
V.3 Watchfulness. The gates were not to be opened till the sun was hot. This would be when there was plenty of light, so that no enemy would get in by pretending that he was a real citizen of the city. If that wall was built to shelter God’s people, and to keep them in separation, then there must be faithfulness in keeping out those who have no heart for the Lord.
V.5-66 A long list of the names of those who lived in the city, altogether 42,360. God knew the name of every one of them.