1)
What is the comparison to raising ocean waves?
1.
Radak: When the sea is stormy due to winds, waves are lifted.
2.
Malbim: Nebuchadnetzar destroyed Tzor in the 27th year of his reign. After he gathered all the spoils and engaged in destroying the city, the sea flooded it ? "v'Sachar Lo Hayah Lo u'Cheilo" (29:18). First it depicts the Churban briefly, that many nations will come against them.