The Massacre of the Peaceful, Unsuspecting People
The story begins with the tribe of Dan (one of the 12 tribes of Israel) looking for a nice place to live. So they sent out five men to find some land.
On their way, they stopped at a Micah's house and asked his priest to ask God where they should go to find some land. The priest told them to just go looking for it, and that God would be with them wherever they went.
So they left there and came to a place called Laish, where the people lived peaceful, secure, carefree lives.
The five men ... came to Laish, and saw the people that were therein, how they dwelt careless, ... quiet and secure;
and there was no magistrate in the land, that might put them to shame in any thing. Judges 18:7
Then the five men returned and told the other Danites to attack Laish, saying that God had given it into their hands.
When ye go, ye shall come unto a people secure, and to a large land:
for God hath given it into your hands; a place where there is no want of any thing that is in the earth. Judges 18:10
So they round up 600 soldiers and march off toward Laish.
(On the way, they stop off at Micah's place, steal his idols and priest, and then proceed toward Laish.)
When they get to Laish, they kill all of the peaceful, unsuspecting people, burn their city, and take their land.
The children of Dan ... came unto Laish, unto a people that were at quiet and secure:
and they smote them with the edge of the sword, and burnt the city with fire. Judges 18:26-27