There is a reason why the New Testament was written in Greek. Even Judaism was greatly influenced by Greek culture (the word synagogue is Greek!). John Mark Reynolds does an excellent job of presenting the Greek background of Christianity in his When Athens Met Jerusalem. Reynolds presents a useful introduction to ancient Greek philosophy which was highly influential on early Christian theology. He deals with pre-Socratic philosophers, Socrates, Plato, Aristotle and later philosophic movements and developments.
The most space is spent with Plato and Aristotle and it is obvious that the author has great knowledge and passion for these philosophers. He does not just speak in generalities but looks at each major work and the ways in which these philosophers evolved in their thought. One of the nice things about this book is that the reader does not need any background in Greek philosophy. Reynolds presents many modern and popular illustrations to help the reader understand the concepts. This is a very good book that is well worth reading.