Okay kiddo, let's talk about something called the Messiah ben Joseph. In Jewish tradition, there is a belief that there will be a special person called the Messiah who will come and save the Jewish people.
Now, some people think that there are actually two Messiahs - one called the Messiah ben David and one called the Messiah ben Joseph. The Messiah ben David is supposed to be a great leader, like a king, who will lead the Jewish people to victory and establish a new world order.
The Messiah ben Joseph, on the other hand, is believed to be a warrior who will fight for the Jewish people and help prepare the way for the Messiah ben David. Some people also believe that the Messiah ben Joseph will die before the Messiah ben David arrives, kind of like a sacrifice to make things better for everyone else.
So basically, the Messiah ben Joseph is a figure in Jewish tradition who is believed to be a warrior who will help prepare the way for the ultimate Messiah who will lead the Jewish people to victory. Exciting stuff, huh?