Krister Stendahl represents, to my mind, the very best of Scandinavian-style “realistic interpretation” of the Bible, resolutely faithful in his exegesis to the historical situation of the text and its author but then marvelously insightful in eliciting from the text a fresh and sometimes surprising address to contemporary issues in church and society. As is well known, it is precisely Stendahl's interest in relations between Jews and Christians (Jewish and Gentile) that has made so much of his New Testament work so stimulating and innovative. As it happens, though, his research has tended to concentrate geographically on that large sweep of territory “from Jerusalem and as far round as Illyricum.” What I want to do in this article in his honor is to explore an area relatively untouched by my teacher—Alexandria—in an effort to see if anything can be said of Jewish-Christian relations there in the first century. In doing this I must perforce extend our investigation mainly to noncanonical sources. Even so the task is formidable, for the first-century Alexandrian church is, as Stendahl says, something “about which we know nothing.” What follows is, therefore, largely a matter of inference, at least insofar as it bears upon first-century Christianity in Alexandria. Insofar as it bears upon first-century Judaism, that giant among Jewish exegetes and philosophers, Philo Judaeus, will play a substantial role.