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Caesara Philippi was a city on the northeast of the marshy plain of el-Huleh, 120 miles north of Jerusalem, and 20 miles north of the Sea of Galilee, at the “upper source” of the Jordan (the Banias River), and near the base of Mount Hermon.
It was afterwards called Panium or Paneas, because of a deep cavern full of water near the town. This name was given to the cavern by the Greeks of the Macedonian kingdom of Antioch because of its likeness to the grottos of Greece, which were always associated with the worship of their god Pan. In Caesara Philippi, the Banias river used to spring from “Pan's Cave” and the pagans surrounded the area with shrines which drew many worshippers. Eventually, an earthquake blocked this exit of the river.
This town was afterwards enlarged and embellished by Herod Philip, the tetrarch of Trachonitis, of whose territory it formed a part, and was called by him Caesarea Philippi, partly after his own name, and partly after that of the emperor Tiberius Caesar. It is thus distinguished from the Caesarea of Israel.