Hierapolis
sacred city, a city of Phrygia, where was a Christian church
under the care of Epaphras (Col. 4:12, 13). This church was
founded at the same time as that of Colosse. It now bears the
name of Pambuk-Kalek, i.e., "Cotton Castle", from the white
appearance of the cliffs at the base of which the ruins are
found.