Since all the educated and commercial classes could speak some Greek, Gospels and Epistles written in that language could be understood by sizeable numbers of people in Egypt, Iraq, Turkey, the Balkans and western Europe. Furthermore, the Romans had constructed a network of good roads which missionaries could use as they spread the Christian message. Religiously, too, the Mediterranean world was ready for the Gospel. The atmosphere was permeated with mystical longings, and many actively sought divine light from strange places. As these were determinative factors enabling God to reveal Himself in the Old Testament and New Testament periods, one can assume that similar conditions in our day could produce the same kind of divine activity.
History never repeats itself exactly.
Nevertheless, as Toynbee and others have pointed out, there are ages which are roughly parallel and exhibit similar characteristics. As God has already used Israel, the Graeco-Roman world and western Europe to carry out special activities concerning the dispensational course of history, one can reasonably expect Him to look elsewhere to proclaim new revelation for our age. At least subconsciously, many people may recognize this fact. Hence, today there seems to be a remarkable amount of interest in the faiths of other lands. Our age has witnessed the growing relatedness of all nations and cultures around the world.