Promises made to God must be kept

Numbers 30:1-16
Regulation about the vow to women.
If her husband says nothing to her about it from day to day, then he confirms them by saying nothing to her when he hears about them. If, however, he nullifies them some time after he hears about them, then he must bear the consequences of her wrongdoing.
These are the regulations the Lord gave Moses concerning relationships between a man and his wife, and between father and his young daughter still living at home.
Vows. Promises made to God must be kept. Men is Israel are unconditionally bound by vows of any kind. Verse 2-15 set out the terms under which vows made by women are binding. This is a patriarchal(重男輕女) society in which men ensure their control over women.
Why?
Man has right beyond daughter and wife to make vow to the Lord, if her father or husband nullifies it. it will not be binding on her. This is a patriarchal society.
Promises made to God must be kept for God is faithful and worthy, so do not rash made vow before the Lord.
No saying means agree with it. So clearly say yes or not to everything we met.
How?
Made decision carefully under the word of the Lord. If it is good say yes, if it is wrong say No.