I shall again, try to patiently explain. And no, I am not emotional at all, over this or any other subject. I consider myself a Stoic. I have been trained to take everything in and reply logically. Calling you a moron is logical. Anyone who insists on something that is not true is a moron. Anyone who cannot write in English that is recognisable to most people is a moron.
But, being a moron aside, let me explain again. Its like the Han Chinese, which make up 90% of the population of the People's Republic of China. They have a tendency to only marry themselves. That is why their ethnicity is largely untouched by others. There are 55 other ethnic groups in China, but they also tend to marry among themselves as well. Interestingly, since I brought the subject up, there is a city called Kaifeng, wherein there are about 200 Jewish families, who tend to marry only with each other. Thus, their DNA is separate from that of other Han, although they don't look much different.
Another example from China is the Hakka. They too, look like the Han of which they are part, but they also tend to stay with themselves. They share DNA with each other also. So tell me, O Brilliant One, if Jews are not an ethnic group, then how is it that the Chinese Jews share DNA with each other and with other Jews (me, for example) that they don't share with you? You say you are African American, because you are 1/32nd Black. I find that rather humourous, but lets go with that. If you are Black, then you share DNA with Black people that you don't share with me. See how that works?
I realise this basic concept is difficult for you. To be honest, it is not the easiest concept to grasp. But, with all the explaining I've done, I would think that by now you would have at least gotten a handle on it. Again, I refer you to Kaplan's excellent book on the subject. He wrote a lot of books, of which only one is relevant here. The rest tend to be theological.
The Kingdoms of Judah and Israel were headed by Kings who received their position by heredity. In Judah's case, the Kings were descended from David. If I were you, I would read my Bible before I opened my mouth and stuck my foot in it. Remember that David was of the Tribe of Judah, from Bethlehem. His children followed in the Kingship of all Israel, until the Ten Northern Tribes separated from the Southern Kingdom of Judah (see, there's that tribal name again). The Kingdom of Judah continued to be ruled by the descendants of David. The Northern Tribes called themselves Israel and were ruled by another family. On several occasions, revolutions occurred that put different men on the throne in Israel. Eventually, the Assyrians invaded Israel, and scattered the people.
Down in Judah, the kingship was steady, until the Babylonians conquered the Kingdom, and sent most of the Jews (people of the Tribe of Judah) into exile. When the Persians conquered Babylon, they allowed the Jews to return to Judah. There, they encountered people called Samaritans. These people were partly Israelite, and partly non-Israelite in descent. They wanted to rebuild the Temple with the Jews, but were refused, for two reasons. One, they were not ethnically pure like the Jews. They had mixed with other people. Two, their religion was not pure either, but was corrupted by non-Jewish beliefs.
There are still Samaritans in Israel today, some 700 of them. They worship, as they always have, on Mt. Gerizim. The Israeli State protects their religious freedom. They are, however, a different ethnic group than the Jews, although they share some of the same common descent (but not all of it; they have various other non-Israelite lineage too).
Well, all that having been said, there really isn't much more I can say. So far, you are the only person in here that refuses to see that Jews are an ethnic group. If they were not, how would non-Jews get the idea that we all have curly dark hair and large noses? This is not true, we all don't, but enough of us do to make it a stereotype. Stereotypes exist because there is a small amount of truth to them.
You see, its like saying that "All Black Americans are ghetto." Obviously that is not true. There are plenty of middle class, and even wealthy Blacks. But there are enough of the ghetto types to render the stereotype partially true.
The same can be said of us in reverse. "All Jews have money." Well, that is not true. If it were, I would not be a Jew, since I have very little money. But, enough of us do have money that the stereotype exists.
"All Black men are huge, giants with big muscles." "All Black women have big breasts and junk in the trunk." Neither of these statements is true. I almost married a Black woman (who was a Black Jew) who was tiny breasted (although she did have junk in the trunk, which I though was very sexy). And I have seen small, nerdy looking Black men. But enough of both sexes have the common characteristics mentioned to create a stereotype. See how that works?
Well, I think I have said enough. There really isn't much more I can say. Repeating myself ad nauseam, ad infinitum, ad absurdam seems pointless. You either get it or you don't. If you get it, you are on board with the rest of the planet. If you don't, you are an idiot. Go around your neighbourhood sometime, and ask both Jews and Gentiles whether Jews are an ethnic group. Tell me the answers you receive. I would be curious to hear what people tell you.
Incidentally, a nation can be a theocracy and still be a kingdom. Saudi Arabia is such. On the other hand, Iran, which is also a theocratic state, is NOT a kingdom. See how that works?