John Gill Commentary Ezekiel 30:26

"And I will scatter the Egyptians among the nations, and disperse them through the countries; and they shall know that I am Jehovah." — Ezekiel 30:26 (ASV)

And I will scatter the Egyptians among the nations, and disperse them among the countries

Of which they might assure themselves, since the Lord had before spoken it, and here again repeats it:

and they shall know that I am the Lord ;

whose name alone is Jehovah, and does whatsoever he pleases; sets up kings, and puts them down; strengthens and weakens kingdoms just as seems good in his sight; none having any power but what is given by him, and which he can take away when he thinks fit.