For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
The Bible says, "He is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world." (1 John 2:2)
Firstly when you read the Bible you should consider it as a whole not only in chosen singular scriptures. If every one is already saved then I have a question what is hell for? Do you know Jesus speaks of people going to hell cast into the lake of fire. I would read The Bible completely don't let popular opinion cause you to move from the truth.