'Vowed' in the Bible

Whenever they went out to fight, the Lord did them harm, just as he had warned and solemnly vowed he would do. They suffered greatly.

And Jephthah vowed a vow unto the LORD, and said, If thou shalt without fail deliver the children of Ammon into mine hands,

And she said to him, “My father, you have made a vow to the Lord; do to me as you have vowed, since the Lord has taken vengeance for you on your enemies, the Ammonites.”

And it came to pass at the end of two months, that she returned unto her father, who did with her according to his vow which he had vowed: and she knew no man. And it was a custom in Israel,