The following are artificial constructs of Abrahamic faiths -
The Jews in the time of the historical Jesus had several afterlife beliefs. One such belief that was held by the Pharisees was a come back in human form on Earth under the rule of the Messiah. This was a point of contention between the Sadducees and the Pharisees. The Sadducees maintained the oldest of Jewish beliefs on the afterlife - namely, there isn't one.
The whole concept of "if it ain't in the Bible it ain't true" is a fallacy brought to being by Martin Luther with his Five Solas. Sola Scriptura is Luther's dogma and that didn't come into existence until 1517 CE. The Bible was only canonized until about 397 CE.
So, along the same line of thinking as Fisherman asks, here is a similar question -
Jesus' sacrifice is supposed to be a ransom sacrifice. A ransom is payment given in exchange for a prisoner. Mankind is supposedly imprisoned by sin. What other ransom gets paid only to have the prisoner judged and executed?
Also, belief is the sole requirement to receive the effect of Jesus' ransom. It is not enough that the ransom was paid. The prisoner has to believe it was paid and paid by Jesus. So, conversely, would that not mean that a person has to believe the are a sinner and a prisoner to sin to be held in captivity in the first place?
One more question. Jesus supposedly fulfilled the Mosiac Law. Upon his Jesus' death the Law was null and void. It was the Jew's who invented the concept of "sins of the fathers". Jesus' sacrifice ended persons being held accountable for what their forefathers' actions. So, does that not mean Adam and Eve's original sin would no longer be held against their offspring?