In the ninth year and the tenth month of Judah's King Zedekiah, Babylon's King Nebuchadnezzar and his entire army came against Jerusalem and surrounded it.
References for Jeremiah 39:1
In the eleventh year of Zedekiah, on the ninth day of the fourth month, they broke through the city walls.
Then all the commanding officers of the king of Babylon—Nergal-sharezer, Samgar-nebo, Sarsechim the chief officer, Nergal-sharezer the field commander—entered it and took their places at the middle gate with the rest of the officials of the king of Babylon.
References for Jeremiah 39:3
When Judah's King Zedekiah and his troops saw them, they tried to escape at night through the royal gardens and the gate between the two walls, toward the desert plain.
But the Babylonian army chased them down and caught Zedekiah in the plains of Jericho. They arrested him and brought him before Babylon's King Nebuchadnezzar at Riblah in the land of Hamath. There the king put him on trial.
References for Jeremiah 39:5
The king of Babylon slaughtered Zedekiah's children at Riblah before his very own eyes, and the king of Babylon slaughtered all the officials of Judah.