That's the thing: Koran is not unaltered. For instance, in 1972, construction workers who were restoring the Mosque of Sana’a in Yemen discovered pages of the Koran dating back to the 7th and 8th centuries, many of which contained passages that differed from the canonical and universally accepted Koran.
http://www.historyofinformation.com/detail.php?id=180
Which is quite a challenge to the Muslim assumption that the Koran is the perfect book of Allah, sent from Paradise in perfect form and preserved without any variants or modifications at all.
http://www.historyofinformation.com/detail.php?id=180
Which is quite a challenge to the Muslim assumption that the Koran is the perfect book of Allah, sent from Paradise in perfect form and preserved without any variants or modifications at all.
teachings of the Bible are so muddled and self-contradictory that it was possible for Christians to happily burn heretics alive for five long centuries. It was even possible for the most venerated patriarchs of the Church, like St. Augustine and St. Thomas Aquinas, to conclude that heretics should be tortured (Augustine) or killed outright (Aquinas). Martin Luther and John Calvin advocated the wholesale murder of heretics, apostates, Jews, and witches. - Sam Harris, "Letter To A Christian Nation"