So Pliny and Josephus in the words lately alleged out of them: and so the evangelists not obscurely concerning Gadara. For Mark saith, "He began to preach in Decapolis"; Luke, "He departed preaching throughout all the city of Gadara."
And that Gadara was of heathen jurisdiction, besides what may be gathered out of those words of Josephus, may be made out also from thence, that hogs were kept there in so great a number, Matthew 8: the keeping of which was forbidden the Jews by the Talmudic canons, as well as the eating them by the Mosaic law. Hence in our notes on Mark 5, we are not afraid to pronounce that possessed Gadarene to be a heathen; and that, if our conjecture fail us not, upon good grounds.
That Hippo also was of heathen jurisdiction, the testimonies of the Jews concerning the city Susitha may sufficiently argue: which as it is of the same signification with the word Hippo, so without all doubt it is the same place. So they write of its heathenism. "The land Tobh, to which Jephthah fled, is Susitha. And why is the name of it called Tobh [that is, good]? because it is free from tithes." And whence came it to be free from tithe? because it was of heathen possession. For there was no tithing without the land, that is out of any place which belonged to the heathen. And again, "If two witnesses come forth out of a city, the greater part of which consists of Gentiles, as Susitha," &c.