I think the ransom sacrifice doctrine is central to most Christian denominations- though people in general are quite unversed in scripture. I always found the idea of God needing a ransom arrangement very hard to believe indeed. The idea of a ransom appeasing God originates in the primitive minds of humans- the practice still exists today in very remote, very uneducated regions that haven’t benefited from human progress. So what’s more likely? That the highest intellectual mind really needed this bizarre arrangement so that he could forgive born sinners? Or that the idea was adopted and evolved from human concepts of the past?
The garden of Eden and the talking snake is defo true though.