Judges 19:2

And his concubine was unfaithful to him, and she went away from him to her father’s house at Bethlehem in Judah , and was there some four months .

But she was unfaithful to him. She left him and went back to her parents` home in Bethlehem, Judah. After she had been there four months,

And his concubine played the whore against him, and went away from him unto her father's house to Beth–lehem–judah, and was there four whole months.