2 Kings's own identical opening formula for Zedekiah's reign - the two accounts sharing a common historical source.
Zedekiah was twenty-one years old when he began to reign. He reigned eleven years in Jerusalem: and his mother’s name was Hamutal the daughter of Jeremiah of Libnah.
Zedekiah was twenty-one years old when he began to reign, and he reigned eleven years in Jerusalem. His mother’s name was Hamutal the daughter of Jeremiah of Libnah.
This closing chapter is the historical epilogue paralleling 2 Kings 24-25, confirming in plain narrative everything the preceding fifty-one chapters had prophesied would happen.