I believe that the story goes that humans sin too much to be allowed into god's presence. The only way for god to save us was to send down his only son to take the burden of our sins onto himself, descend into hell, and then to rise again. It is my understanding that Jesus took every one's sin with him when he went to hell thus making the only requirement to gain entrance into heaven repentance and belief in Jesus.
The main problem I see with this is that god is supposed to make the rules. If humans sin too much whose fault is it, the human or the supposed creator of humans? Plus, the standard of too much sin is created by god and I would assume then he could just change the standard to fit his creation better.
I was raised a catholic and was a believer until the age of 17.
I've always wondered about one thing - Jesus dying on the cross "saved" us, but how?
So God was sitting up there, we butchered his only kid and then he goes, "Right - the gates of Heaven are now open"?
Perhaps this is better posed to a christian but I'd be interested on any views from this group.