Jamieson, Fausset and Brown on Ezekiel 19:14

14. fire ... out of a rod of her branches--The Jews' disaster was to be ascribed, not so much to the Chaldeans as to themselves; the "fire out of the rod" is God's wrath kindled by the perjury of Zedekiah (Eze 17:18). "The anger of the Lord" against Judah is specified as the cause why Zedekiah was permitted to rebel against Babylon (2Ki 24:20; compare Jud 9:15), thus bringing Nebuchadnezzar against Jerusalem.

no strong rod ... sceptre to rule--No more kings of David's stock are now to rule the nation. Not at least until "the Lord shall send the rod of His strength ("Messiah," Psa 110:2; Is 11:1) out of Zion," to reign first as a spiritual, then hereafter as a literal king.

is ... and shall be for a lamentation--Part of the lamentation (that as to Jehoahaz and Jehoiakim) was matter of history as already accomplished; part (as to Zedekiah) was yet to be fulfilled; or, this prophecy both is a subject for lamentation, and shall be so to distant posterity.