Lots of good answers given here - lots of good Scriptures given
All of them (the Scriptures) are correct and 100% true!
Some focus on believing, some on confession, or repentance, or baptism, etc. - but to start making a list of requirements misses the point.
The central focus of salvation and the key player is Jesus Christ. But if that is all we say, then it must be that the entire world and all of the people in the world are saved because Jesus died and was resurrected.
But not everyone is saved, so who is saved? That is where the words and ideas being discussed in this thread come in.