I would add gently that it has nothing to do with what you believe. It has everything to do with what HE has said and done.
Well certainly Jesus has done everything to make Salvation possible for all mankind.
However I believe for Christ’s sacrifice to have any benefit to me, I must respond to it through faith in Him and by following His teachings.
28. Then they asked him, "What must we do to do the works God requires?"
29. Jesus answered, "The work of God is this: to believe in the one he has sent."
29a. "AND by following my teachings!"