Isaiah 19:18

In that day shall five cities in the land of Egypt (q) speak the language of Canaan, and (r) swear to the LORD of hosts; one shall be called, The city of (s) destruction.

(q) Will make one confession of faith with the people of God, by the speech of Canaan, meaning the language in which God was then served.

(r) Will renounce their superstitions and protest to serve God correctly.

(s) Meaning of six cities, five would serve God, and the sixth would remain in their wickedness: and so there would be but one lost.