36 “My father,” she replied, “you have given your word to the LORD. Do to me just as you promised, now that the LORD has avenged you of your enemies, the Ammonites.

Read Judges 11:36 Using Other Translations

And she said unto him, My father, if thou hast opened thy mouth unto the LORD, do to me according to that which hath proceeded out of thy mouth; forasmuch as the LORD hath taken vengeance for thee of thine enemies, even of the children of Ammon.
And she said to him, "My father, you have opened your mouth to the LORD; do to me according to what has gone out of your mouth, now that the LORD has avenged you on your enemies, on the Ammonites."
And she said, “Father, if you have made a vow to the LORD, you must do to me what you have vowed, for the LORD has given you a great victory over your enemies, the Ammonites.