Ezekiel 26:12

“And they will make a spoil of your riches, and make a prey of your merchandise, and they will break down your walls, and destroy your pleasant houses, and they will lay your stones, and your timber, and your dust in the midst of the waters.”

The riches from trade and merchanting would become a spoil for the invaders, their proud buildings a ruin, and these would be tossed into the harbour. This would no doubt be true to some extent under Nebuchadnezzar, but later, in the time of Alexander the Great, this would occur for the specific purpose of enlarging the causeway to the island for the invading troops. The ruins of the mainland city would be utilised. The prophecy telescopes Tyre's future, for Yahweh's activities against Tyre will go on and on.

We have here an example of how prophecy can contain two elements, a near and a far. It begins with specifics and then continues with a later outcome, the inexorable march of history. For the prophets were not interested in forecasting particular events but in presenting the total picture of the final purposes of Yahweh.