Are you trying to convince me there are tribes of Jews that are Christians but who do not fellowship with Gentile Christians? Are any of these special classes of Christians worshipping in their unique churches in America today?That's because you are stubbornly clinging to Churchianity.
If you do not know who the twelve tribes of Israel are, you have a lot to learn.
Acts 11:19 (AKJV/PCE)
(11:19) ¶ Now they which were scattered abroad upon the persecution that arose about Stephen travelled as far as Phenice, and Cyprus, and Antioch, preaching the word to none but unto the Jews only.
That you have "never seen" something is irrelevant. Read the BIBLE.