I'm certain that you meant to say Talmud, as the great majority of Jews, from my experience, are "unfamiliar" with the Tanakh.
So, I'm not surprised that you know nothing of the role of the goel... (pre-70 A.D. Mosaic Judaism).
Obviously, you are not that intelligent, as you haven't figured out how to do an internet search. It's the "I'll just ask my rabbi" excuse, no doubt.
How about that ancestry ("family tree") going back to Abraham?