The execution of one king and the deportation of another were but preludes to the great national catastrophe in the time of Zedekiah, the destruction of the Temple and the exile of the whole people. After Nebuchadnezzar had led Jehoiachin and a portion of the people into banishment, his commiseration was aroused for the Jews, and he inquired, whether any other sons of Josiah were still living. Only Mattaniah was left. He was re-named Zedekiah, in the hope that he would be the father of pious sons. In reality the name became the omen of the disasters to happen in the time of this king.
Nebuchadnezzar and the Holy Sanctuary
Legends of the Jews 10:3