"If a man wants to make a special promise to God, or if he promises to give something special to God, let him do that thing. But he must do exactly what he promises!
But if her father hears about the promise and does not agree, she is free from her promise. She does not have to do what she promised. Her father stopped her, so the Lord will forgive her.
But if the husband hears about the promise and refuses to let her keep her promise, the wife does not have to do what she promised. Her husband broke the promise—he did not let her do what she said. So the Lord will forgive her.
But if her husband hears about the promise and refuses to let her keep the promise, she does not have to do what she promised. It doesn't matter what she promised, her husband can break the promise. If her husband breaks the promise, the Lord will forgive her.
A married woman might promise to give something to the Lord, or she might promise to do without something, or she might make some other special promise to God. The husband can stop any of these promises, and the husband can let her keep any of these promises.
How does the husband let his wife keep her promises? If he hears about the promises and does not stop them, the woman must do exactly what she promised.
These are the commands that the Lord gave to Moses. These are the commands about a man and his wife, and about a father and his daughter who is still young and living at home in her father's house.