In the past half-century some of the most influential treatments of this issue have been K. Lake’s “Proselytes and God Fearers” in F. Foakes Jackson and Lake, The Beginnings of Christianity I. The Acts of the Apostles, vol. 5 (London, 1933), pp. 74–96 and the extended note to Acts 13:16 in H. L. Strack and P. Billerbeck, Kommentar zum neuen Testament aus Talmud und Midrasch, vol. 2 (Munich, 1924), pp. 715–723. More recent studies include: Louis H. Feldman, “Jewish ‘Sympathizers’ in Classical Literature and Inscriptions,” Transactions of the American Philological Association 81 (1950), pp. 200–208. P. Markus, “The Sebomenoi in Josephus,” Journal of Semitic Studies 14 (1952), pp. 247–250; M. Wilcox, “The God-fearers in Acts: A Reconsideration,” Journal for the Study of the N.T. 13 (1981), pp. 102–122; Kraabel, “The Disappearance of the ‘God-Fearers,’” pp. 113–126; Thomas M. Finn, “The God Fearers Reconsidered,” Catholic Biblical Quarterly 47.1 (1985) pp. 75–84.