Caused his army to serve a great service against Tyrus - He was thirteen years employed in the siege. See Joseph. Antiq. lib. 10 c. 11. In this siege his soldiers endured great hardships. Being continually on duty, their heads became bald by wearing their helmets; and their shoulders bruised and peeled by carrying baskets of earth to the fortifications, and wood, etc., to build towers, etc.
Yet had he no wages, nor his army - The Tyrians, finding it at last impossible to defend their city, put all their wealth aboard their vessels, sailed out of the port, and escaped for Carthage; and thus Nebuchadnezzar lost all the spoil of one of the richest cities in the world.
The prophet places this prediction out of chronological order, that he may point out what had not been stated in the foregoing prophecy, namely, that the agent who should strike the first blow on Egypt should be the Chaldaean king, Nebuchadnezzar.
Ezekiel 29:18
Yet had he no wages - It is not improbable that the Tyrians before they surrendered their island-citadel managed to remove much of their treasure; but others exlplain the verse; that the siege and capture of Tyre is to be regarded as the “work” appointed, and the possession of Egypt as the “reward or wages” for the work.
Ezekiel 29:21
Egypt being the antagonist of the people of God, her overthrow inaugurated the triumph of good over evil.
The horn - Or, “an horn to bud forth to the house of Israel.”
I will give thee the opening of the mouth - When these things should begin to come to pass the prophet‘s mouth should be opened to declare their meaning, and to make known the end to which all was tending.