Komentarz do Diwrej ha-jamim I 4:40

for the dwellers of yore were from Ham They dwelt in peace and tranquility, and no one came to harm them; therefore, they did not beware when they came upon them to fight, and an example of this is found in Judges (18:27): “... and they came to Laish, to a people tranquil and secure etc.,” (verse 7): “... and they had no bond with any man.” Because they were tranquil, they were not afraid, and they did not make a pact with anyone to help them; therefore, five hundred men defeated them. It is also written above (verse 7): “... after the manner of the Zidonians, tranquil and secure, etc.”