travelers in these barren landscapes could never have survived without the kindness of strangers. >> when you're out wandering into a new village and you meet someone and they offer you a cup of coffee or tea, i mean, those are the moments that define abraham for me. >> thank you. >> what do we have here? i'm christiane. very nice to meet you. afnagoran brought me to a stop where a baudoten named nasser offers travelers of all faith to share a meal with him. delicious. his meal is one like sarah and abraham might have offered to strangers who came to their home. >> at that meal, they announce that sarah, now almost 90, will have a child. she laughs with incredulity. >> what sarah and abraham didn't know, the bible tells us, was that the visitors were actually angels bringing them a message from god.