Why did a Levite man cut his sub-wife into 12 pieces?

ANSWER

To rally the judges of Israel and make the crime known

Judges 19 :

29 When he reached home, he took a knife and cut up his concubine, limb by limb, into twelve parts and sent them into all the areas of Israel. 30 Everyone who saw it was saying to one another, “Such a thing has never been seen or done, not since the day the Israelites came up out of Egypt. Just imagine! We must do something! So speak up!”
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