In Numbers, chapter thirty, verse two, Moses speaks to the leaders of the tribes regarding the children of Israel in terms of what the Lord commanded. The verse makes it clear a vow that God requires His people to keep their promises to Him and others. Through these laws, He impresses on them the severe nature of vows or any pledges made, and He emphasized that insincerity, lying, and hypocrisy had no place among God’s people. However, special provisions concerning rash vows of youth and vows affected the relationship between husband and wife or father or daughter.
A person vows a vow must be in a thing that is lawful to accomplish. However is not contrary to the revealed will and mind of God, may tend to the glory of God, the honor of religion, the service of the sanctuary, the good of a man’s self or his neighbor, or in things purely indifferent, which may, or may not be without offense to God or man. Since that person will not eat such a thing for such a time or will do this or the other may forbid themself what is outlawed and what is complimentary and lawful. However, they may not make free or legitimate what is prohibited. That is, they may not vow to do something contrary to the law of God. Such a vow will not stand, and the person who was to be of such an age before he could make a vow that would be valid. The individual must be at least thirteen years of age or have a good understanding of what they declare.
Today people make promises that they tend not to keep carelessly. Some individuals do it habitually, while others partially. However, the pretenders do not realize that saying things and not meaning it will eventually create a poor impression of themselves.