Judges 18:27-29

27They took the [idolatrous] things that Micah had made, and his priest, and they came to Laish, to a people who were quiet and secure; and they struck them with the edge of the sword and burned the city with fire.

28And there was no one to rescue them because it was far from Sidon and they had no dealings with anyone. It was in the valley which belongs to Beth-rehob. And they rebuilt the city and lived in it.

29They named the city Dan, after Dan their forefather who was born to Israel (Jacob); however, the original name of the city was Laish.