Judges is so called because it tells of the times of various rulers, or judges, of Israel from the possession of Canaan until the time of Samuel. Also found in Judges is the recounting of the adventures of Samson.

Judges 21

21:5 And the children of Israel said, Who is there among all the tribes of Israel that came not up with the congregation unto the LORD? For they had made a great oath concerning him that came not up to the LORD to Mizpeh, saying, He shall surely be put to death.