Unless I'm mistaken, Jews don't have a vision of heaven as Christians do. The Jewish religion focuses on life on earth and leaves the idea of an afterlife open, although they do believe life goes on in some capacity.

Anyway, I don't think it's good form to challenge another's religious beliefs and it is a Christian belief that the entrance to heaven is paved with the belief of Christ as your savior.

Stating your view of what the afterlife means to you would be a better way to go, and it might promote some great discussion.