The men of Ephraim were gathered together, and passed northward; and they said to Jephthah, Why did you pass over to fight against the children of Ammon, and didn't call us to go with you? we will burn your house on you with fire.
As Dalglish's discerning comment has it, "The vow of Jephthah and its fulfillment had carried the story beyond the defeat of the Ammonites  (Judges 11:33), and the editor (we think it was Samuel the narrator, J.B.C.) now returns to that setting in order to relate the altercation of Jephthah with the men of Ephraim."[3]