God's Chooses to Weaken Egypt

²⁰ In the eleventh year, in the first month, on the seventh day of the month, the word of the Lord came to me: ²¹ “Son of man, I have broken the arm of Pharaoh king of Egypt, and behold, it has not been bound up, to heal it by binding it with a bandage, so that it may become strong to wield the sword. ²² Therefore thus says the Lord God: Behold, I am against Pharaoh king of Egypt and will break his arms, both the strong arm and the one that was broken, and I will make the sword fall from his hand. ²³ I will scatter the Egyptians among the nations and disperse them through the countries. ²⁴ And I will strengthen the arms of the king of Babylon and put my sword in his hand, but I will break the arms of Pharaoh, and he will groan before him like a man mortally wounded. ²⁵ I will strengthen the arms of the king of Babylon, but the arms of Pharaoh shall fall. Then they shall know that I am the Lord, when I put my sword into the hand of the king of Babylon and he stretches it out against the land of Egypt. ²⁶ And I will scatter the Egyptians among the nations and disperse them throughout the countries. Then they will know that I am the Lord.”

I have to admit, i don't get what's going on here. 

We already learned from the previous 19 verses that God was going to execute judgement against Egypt for her treatment of Israel.   So when they talk in this section about breaking Egypt's good arm and also breaking her broken arm again, I don't get it.

I understand the end result of what God wants.  He wants Egypt to see that he is the Lord.  That none of their 'gods' is God ONLY he is.

I guess the point is, when I stop and think about it some more is this.   God could have just let Babylon come in and fight and eventually defeat Egypt.

What God did though is he weakened Egypt.   He weakened her in such a way that Pharaoh was groaning about it.  

It tells me that God strengthens those he will strengthen and weakens those he will weaken.
God is Lord.
It is very apparent to me in these verses, God is Lord.  

He used a nation that was evil in the sight of God to discipline another nation that had treated his people badly.  In that process he weakened Egypt so that Babylon could wreak devastation upon her.