It was during the last quarter of the second century in the eastern Mediterranean, possibly in the city of Alexandria, that a man by the name of Diognetus met a Christian author as well as some other believers. It is not surprising that as Diognetus spent time with this man and the others, he began to ask them questions: What do you Christians believe about God? Why do you reject the gods that other Greeks and Romans worship? Why do you Christians use the Jewish Old Testament even though you're not Jews? And Diognetus was amazed when he saw the way these Christians related to one another, for it was evident that they loved each other like people in the same family were to love each other. Why was that?