In the 13th century BC Amman was called Rabbath Ammon or Rabat Amon by the Ammonites Rabbat ʿAmmon, Tiberian Hebrew Rabbaṯ ʿAmmôn). It was later conquered by the Assyrians, followed by the Persians, and then the Greeks. Ptolemy II Philadelphus, the Hellenic ruler of Egypt, renamed it Philadelphia. The city became part of the Nabataean kingdom until 106 AD when Philadelphia came under Roman control and joined the Decapolis.