Before Us

Jonas has arrived at the place where the Receiver is he meets him and they start talking. The Receiver starts talking about what kinds of things he will be showing Jonas, but Jonas doesn't understand what he's trying to say. The Receiver says "Things before me and you...before us". I think that this will be hard to take in for Jonas but once he starts seeing all this stuff he's gonna love it and it will be great. How will Jonas think of the memories from the past?