From what I understand, God created Adam and Eve, banished them from the garden, and humanity became corrupted and stained with Original Sin.
Some time passed. God said enough was enough, and started over with the great flood and Noah's Ark. The flood killed everyone on earth except Noah and his family and a pair of each species of animals on earth.
The idea of "starting over": Does it mean that Noah's family didn't have Original Sin anymore? Or did they still?
If they still had Original Sin, was it really starting over in the eyes of God? If they lost Original Sin, how did humans get it back?
I'm kind of confused on this part of the story. I'm not necessarily looking for bible quotes, just a simple explanation.