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.
When the Ephraimites had confronted Gideon, he responded with psychology (Judges 8:1-3). Jephthah was a different kind of person from Gideon, however. He responded with a sword. Jephthah was a nobody, and nobodies are often unimpressed with people who think they are somebodies, as the Ephraimites did.