My question is this----

At one time, eating meat on Friday was a mortal sin. Mortal sin was defined as sin that would land a person in hell. Hell was defined as a place of eternal punishment.

Then eating meat on Friday was no longer a mortal sin.

Within one week, a sin that resulted in eternal punishment became no sin at all and eternal punishment was gone for this "sin".

How could such a thing be? One Friday, eternal punishment (the ultimate horror) became, the next Friday, no sin at all - no eternal punishment.

It's possible my understanding of this is incorrect, but I'm sure that was taught in recent times.

Thank you for any answers.