she offered hadar, her maid, to abraham, for surrogacy. >> since she had given birth to a boy names ishmael, sarah told them she wanted both of them out for good. >> you see hagar's extreme distress in the bible. and then god appears to her and said fear not, from this child, i will also make a people, and this is the arab people. >> arabs to this day, trace their lineage right back to abraham through ishmael. each year, millions of christians make their pilgrimage to the place where they believe ismail made his home, mecca in saudi arabia. here, muslims also believe abraham came to visit ishmael and they built islam's first house of worship. the bible doesn't mention mecca. instead, it tells us abraham finally found a permanent home