Ar is mentioned in the Bible several times as a city of ancient Moab (Numbers 21:15). While the exact location is unknown, it was likely in the southern part of the Arnon Valley.[1] The city was one of Moab's most prominent, being listed by the prophet Isaiah in his denunciation of the Moabite nation (Isaiah 15:1).
The Bible later speaks of Ar as being captured by the Amorite King Sihon (Isaiah 21:28).
Modern scholars believe that the word "Ar" likely meant "city".[2]