NET

25 I will strengthen the arms of the king of Babylon, but the arms of Pharaoh will fall limp. Then they will know that I am the Lord when I place my sword in the hand of the king of Babylon and he extends it against the land of Egypt.

Darby

25 And I will strengthen the arms of the king of Babylon, and the arms of Pharaoh shall fall down; and they shall know that I [am] Jehovah, when I have put my sword into the hand of the king of Babylon, and he shall have stretched it out upon the land of Egypt.

KJV

25 But I will strengthen the arms of the king of Babylon, and the arms of Pharaoh shall fall down; and they shall know that I [am] the LORD, when I shall put my sword into the hand of the king of Babylon, and he shall stretch it out upon the land of Egypt.