Judges 11:12

And Jephthah sent messengers unto the king of the children of Ammon, saying, What hast thou to do with me, that thou art come against me to fight in my land?

Jephthah sent messengers unto the king of the children of Ammon. This first act in his judicial capacity reflects the highest credit on his character for prudence and moderation, justice and humanity. The bravest officers have always been averse to war; so Jephthah, whose courage was indisputable, resolved not only to make it clearly appear that hostilities were forced upon him, but to try measures for avoiding, if possible, an appeal to arms; and in pursuing such a course, he was acting with the prudence, and on the pacific policy, which became a leader in Israel, who was required by law not to resolve on war until negotiation had failed (Deuteronomy 20:10).