'Pledges' in the Bible

"When a young woman makes a vow to the LORD or pledges herself to an obligation while she still lives in her father's house,

"If she has a husband and she makes a vow that is binding on herself, or if she makes a hasty vow with her mouth that she pledges herself to fulfill,

"Everything that a widow or a divorced woman pledges herself to fulfill are to be binding on her.