Midrash su Ezechiele 25:8

Rabbi Yitzḥak began: “We are ashamed, for we heard disgrace; humiliation covered our faces, as strangers came upon the sanctuaries of the House of the Lord” (Jeremiah 51:51). You find that when the enemies entered Jerusalem, Amonites and Moavites entered with them, as it is stated: “The besieger spread his hand over all its delights; for it saw the nations entering its Sanctuary, whom You had commanded that they should not enter Your assembly” (Lamentations 1:10).²³Regarding the Amonites and Moavites it is written: “An Amonite or a Moavite shall not enter into the assembly of the Lord” (Deuteronomy 23:4). They entered the Holy of Holies and found there two cherubs. They took them, placed them in a cage, and were circulating it in the streets of Jerusalem and saying: Did you not say that this nation does not engage in idol worship? Look at what we found of theirs and what they were worshipping. All faces are the same.²⁴They are like other nations in that they, too, worship idols. That is what is written: “Because Moav and Seir say: Behold, the house of Judah is like all the nations” (Ezekiel 25:8). At that moment, the Holy One blessed be He took an oath that He will completely exterminate them from the world, as it is stated: “Therefore, as I live, the word of the Lord of hosts, God of Israel, Moav will be like Sodom and the children of Amon like Gomorrah” (Zephaniah 2:9). When they sinned²⁵This is referring to the Israelites. they were exiled. When they were exiled, Jeremiah began lamenting in their regard, eikha.
Another matter: “We are ashamed, for we heard disgrace (Jeremiah 51:51), this is the seventeenth of Tammuz. “Humiliation covered our faces” (Jeremiah 51:51) – this is the ninth of Av. “As strangers came upon the sanctuaries of the House of the Lord” (Jeremiah 51:51) – the first destruction and the second destruction. When they sinned they were exiled. When they were exiled, Jeremiah began lamenting in their regard, eikha.