Be thou ashamed, O Zidon. Zidon, the most ancient and venerable of the Phoenician cities (Genesis 10:15; Joshua 11:8; Joshua 19:28; 18:7; Justin, 18:3, etc.), is called upon to feel shame because Tyre is captured.
The ruin of the metropolitan city would be felt as a disgrace by all the lesser towns, and by Zidon especially. The sea … even the strength of the sea; rather, the stronghold of the sea; i.e. Tyre herself.
Tyre declares that she is childless, has neither son nor daughter, is as if she had never travailed nor brought forth children. I travail not, etc.; rather, I have not travailed, nor brought forth, nor nourished up, etc.
My children being dead or taken from me, it is as if I had never borne them.