moon
Satire for Sanity
According to Wiki the Jews were ' a significant major population ' at the time of the Roman Wars, not THE major poulation and hardly a ' kingdom ' as the Jews were subjugated by the Romans. The ' wars ' were actually a serious of revolts against Roman subjugation- much like the Palestinians' intifadas against their Jewish invaders today.Judaea would have been after the Old Testament, and during the New Testament. It is a significant kingdom according to Romans, and all the other people's of the time. There is absolutely no doubt it existed.
It ended with the Jewish-Roman Wars. Here is a part of the Arch of Titus depicting Titus' victory over Jerusalem during that war. Note the Jewish menorah being carried off. It was made within a few years of the Roman victory. Obviously, there are a huge number of written records also.
Jewish–Roman wars - Wikipedia
en.wikipedia.org