Abram
Many of the sacred writings of all the great faiths claim to be the word of God. The archaeology is a rather imprecise science. Whether or not Abraham or Isaac, or Moses were historical figures is open to question.
Though I have a copy of the Qur/\'an and have read parts of it one still has to question what is parable or metaphor etc.
I do not personally accept that the Bible is the absolute inerrant word of God and can only speculate that what I have read from the Qur'an is in the same category.
That being said I do believe that God or Allah if you like does speak to human beings through the sacred scriptures of many of the great faiths. I do not believe for one moment that any of them has or holds the complete truth. While they are inspired books they are also written by human hands.
Shalom
Ted