Hi Longhorn,
Here is an excerpt where this verse is spoken of specifically, but in this article (6) 'The Two Judgments by Fire' Ray explains Ezekiel 16 verse by verse.
http://bible-truths.com/lake6.html --------
So even though the sins of Jerusalem are twice as abominable as the sins of Sodom, God will, nonetheless, SAVE JERUSALEM! And just when will God save Jerusalem? AT THE SAME TIME THAT HE SAVES SODOM. Yes, Sodom WILL BE SAVED, and she will be saved at the same time that doubly corrupt and abominable Jerusalem will be saved. Now least anyone think that I harbor ill feelings toward Jerusalem for writing these things, let me make it abundantly clear where these things came from. It is GOD, and not I, Who calls Jerusalem, Sodom and Egypt, and not only historically, but prophetically as well.
"When your sisters, SODOM and her daughters, shall return to their former estate, and Samaria and her daughters shall return to their former estate, then THOU [JERUSALEM] and thy daughters shall return to YOUR former estate" (Verse 55).
"Then you shall remember your ways, and be ashamed, when you shall receive your sisters, your elder [Samaria] and your younger [SODOM]: and I will give them [Samaria and Sodom] unto you for daughters, but not by your covenant. And I will establish my covenant with you; and you shall KNOW [for the first time] that I am the Lord: That you may remember, and be confounded, and never open your mouth any more because of your shame, when I am PACIFIED [make atonement, to pardon, to placate, to cover, to condone] TOWARD THEE [Jerusalem AND her sisters, Samaria and Sodom] for all that you have done, saith the Lord God" (Verses 61-63).
When God purges the hearts and minds of the wicked with His all-consuming spiritual fire, they will be UTTERLY ASHAMED!
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mercy, peace and love
Kat