“Christ suffered for our sins once for all time. He never sinned, but he died for sinners to bring you safely home to God. He suffered physical death, but he was raised to life in the Spirit.”
1 Peter 3:18 NLT
The verses before this one Peter encourages the believers to do what is right even in the face of opposition and/or suffering. Then he points to Jesus suffering for us. Christ suffered once for all time, His death was in contrast to the centuries of animal sacrifice where millions of animals had been killed. He died once for all a perfect sacrifice that would never need to be repeated. It was enough to cover the sins of the world for all time. So surly it is enough to cover all of your and my sins no matter how bad we think we have been, no matter how undeserving we feel we may be, for none of us did right, we where all lost in our sins and He came and found us. He died and saved you to bring you home to heaven. He died a real physical death, and was raised to new life so that we may know that someday we also will be raised to a new life in heaven.
