And it grew, and became a spreading vine of low stature, whose branches turned toward him, and the roots thereof were under him: so it became a vine, and brought forth branches, and shot forth sprigs. A spreading vine of low stature - The Jewish state having then no height of dominion, it must abide under the wings or branches of the Chaldean king.
Those branches turned toward him, and the roots - under him - Zedekiah was wholly dependent on Nebuchadnezzar, both for his elevation to the throne, and his support on it.