Salvation, in biblical christian sense, is being saved from our sin, for which the penalty is death. The bible makes it clear that we can not save our selves. Only death can repay that. But God in his love sent his only begotten son to die on the cross as us, for us, instead of us.
If you believe that He died for you, your penalty has been paid. You are no longer under the law which demands your death. You are saved and only by this belief.
If you believe that He died for you, your penalty has been paid. You are no longer under the law which demands your death. You are saved and only by this belief.