Modern criticism of the book of Acts began with a hyper-Cartesian decision to doubt everything simultaneously. The author was not to be trusted as a reliable reporter on any issue of significance—the character and fate of the believers in Jerusalem, the status and role of Peter, the teaching of Paul, and so on. Recently, a former student of Krister Stendahl, A. T. Kraabel, has proposed that we should extend our skepticism to yet another area of Acts, to wit, the presence of Gentiles in all of the synagogues visited by Paul on his missionary journeys.