Bahai - an evil deception ?, page-160

"saved/sealed/forgiven only by placing their faith in the death/burial/resurrection of Christ ?"

That is not what's being taught, re the saved part, it is the following;

"For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;"

It was sin that brought death, hence believe that Jesus died for them, for people.