Promise 36 from Numbers 30:8

Numbers 30:8 - "But if on the day her husband hears of it, he forbids her, then he shall annul her vow, which she is under and the rash statement of her lips by which she has bound herself, and the Lord will forgive her."

This passage is dealing with the vows or promises that are made. In this particular verse it is talking about promises that a married woman makes. If she makes a promise but her husband doesn't agree with it, then the promise can be annulled and she is not held to the promise nor considered wrong by God. In our day and time, this rule would not fly very well with most couples. But, if you look at the divorce rate, especially in the US, something is not working very well. Most marriages can not stand for very long in our "It's all about ME society." Most marriages break up because one or the other isn't getting out of the marriage what they expected and are not willing to make sacrifices of their own desires to accommodate the desires of the other, so they split. This verse isn't as much about keeping a promise, but it is about communication and including the spouse in decisions or promises made. If both parties of a marriage would hold off on making promises that effect both of them until they talk about it and decide together, then God will bless the words and actions of those promises, if they are honouring, of course. The promise here is that God will forgive broken promises when they come in line with His desire of joint consideration within the marriage. A vow spoken to one person should not out weigh the agreement between man and wife.