In that day five cities in the land of Egypt will speak the language of Canaan and swear by the LORD of hosts; one will be called the City of Destruction.
Isaiah 19:18
Surrounding context
19:17 And the land of Judah will be a terror to Egypt; everyone who makes mention of it will be afraid in himself, because of the counsel of the LORD of hosts which He has determined against it.
19:18 In that day five cities in the land of Egypt will speak the language of Canaan and swear by the LORD of hosts; one will be called the City of Destruction.
19:19 In that day there will be an altar to the LORD in the midst of the land of Egypt, and a pillar to the LORD at its border.