Many     converts    from    Islam   to  Christianity    have
described   the powerful    impression  it  made    upon    them    when
they    realized    through reading St. Paul’s  epistles    that    Islam   is
just    a   system  of  laws;   it  offers  no  salvation.
- Christians  believe that    God forgives    all sins.   Do
 Muslims share this belief, or are there any unforgivable
 sins in Islam?
There    are     three   types   of  sin     for     which  Allah    will    not
forgive sinners:
a.  Attributing Partners    to  Allah.  ‘‘Allah will    not forgive
idolatry.   He  that    serves  other   gods    besides Allah   has strayed
far  indeed’’    (Sura   4:116).    Attributing  partners    to Allah    is
calledshirk.     This    specifically    includes    praying     to  Jesus
Christ, the Holy    Spirit, the Virgin  Mary,   the saints, and the
angels.  All     these   forms   of  intercessory    prayers     are
considered  forms   of  blasphemy   in  Islamic theology.   Islamic
commentators,    both    classical   and     contemporary,   state   that
such    prayers are blasphemous and unforgivable.
b.   The     Killing     of  a   Believer.   Under   no  circumstances
should   a   Muslim  kill    any     other   Muslim  intentionally.
‘‘Whoever    kills   a   believer    purposefully,   his     reward  is  hell
forever.    Allah   is  wroth   with    him and hath    cursed  him and
prepared     for     him     an  awful   doom’’  (Sura   4:93).  Numerous
Muslim  theologians agree   that    this    sin cannot  be  forgiven.
Non  Muslims     may     find    this    a   curious     belief  given   the
numerous     wars    that    have    been    fought  between     Muslim
countries   (for    example,    the seven   yearlong    Iran    Iraq    War of
the 1980s), and also    given   the terrorist   attacks on  the World
