According to the man who ought to know: not all Christians go to
heaven.
†. Matt 7:22-23 . . Many will say to me in that day: Lord, Master, have we
not prophesied in thy name? and in thy name have cast out devils? and in
thy name done many wonderful works? And then will I profess unto them: I
never knew you. Depart from me, you that work iniquity.
That passage doesn't target Atheists, nor Hindus, nor Buddhists, nor
Muslims. No, it targets people professing to have prophesied in "thy name"
and to have exorcised demons in "thy name" and to have done many
wonderful works in "thy name". In other words: the Lord's statement targets
Christians; viz: people professing to be his followers-- and not just the
average rank and file pew warmer either; but the serious Christians: the
ones who preach amazing sermons, cast out demons, build churches and
schools, and operate charities like orphanages, rescue missions, and hostels,
etc.