Vows can be a part of our worship. (Psalm 22:25; 61:8; 65:1)

In the ritual law, cohenim made an estimation of the redemption price of things offered in vows, according to the age and sex of the person making the offering. (Leviticus 27:1-13)
of Land (Leviticus 27:14-15)
Of a field (Leviticus 27:16-25)

Fathers have limited authority in superseding vows made by their dependent children. (Numbers 30:3-5)

Husbands have limited authority in superseding vows made by their wives. (Numbers 30:6-8)

Widows and divorced women stand on their own and are fully responsible for their vows. (Numbers 30:9)

Vows may include offerings promised to the Lord and His service. (Leviticus 5:6-13; 7:16-18; 27:1-25; Numbers 15:2-16)

Offerings to God in sacrificial vows must be perfect. We may not give Him "second best". (Leviticus 22:18-25)

Under ritual law if you offered edible things in a sacrificial vow, they were to be eaten the   same day they were offered. The principle we may derive is that we must not allow that which is devoted to God to go to waste or to spoil. (Leviticus 7:16-18)

If you offered something in a vow to God, the object was to be brought in to the tabernacle or temple. (Deuteronomy 12:6, 11, 17-18, 26) The same principle applied in the New Covenant. (1 Corinthians 16:1-3)

Some of these offerings were to be used to maintain the place of worship and to support the cohenim. (Numbers 18:14)

We may not offer the earnings of sin. (Deuteronomy 23:18) 

God hears our vows. (Psalm 61:5)

We must fulfill our vows. (Leviticus 5:4-13; Deuteronomy 23:21; Job 22:27; Psalm 50:14; 56:12; 66:13; 76:11; Ecclesiastes 5:4; Nahum 1:15)

Fulfillment of our vows remains obligatory even in the midst of affliction. (Psalm 116:13-19)

Therefore we should beware of making rash vows. (Proverbs 20:25; Ecclesiastes 5:6)

God will discipline those who make false vows. (Zechariah 5:4; Malachi 3:5)

It would be better to not make a vow than to make a false one for (though other sins may apply) the sin of breaking one's oath cannot be charged to us if we do not swear. (Deuteronomy 23:22; Matthew 5:34-37; James 5:12)

We must never make an oath in God's name and then not fulfill said oath. (Leviticus 19:12)

Instead we should do everything in our power to do as we promised. (Numbers 30:2; Joshua 9:20; Judges 11:30-36; 2 Samuel 15:7-9).

We are not truly free of our obligation until we have accomplished all the terms of our contract. (Genesis 24:8)

There cannot be any deliberate delay in accomplishing what we have promised. (Deuteronomy 23:21; Psalm 65:1; 66:13; 76:11; 116:18; Ecclesiastes 5:4-5)

It does not matter if we make a rash vow based on ignorance. We are still guilty of sin. (Leviticus 5:4-5, 17-19)

Ignorance is not bliss in this case. This is why it is better to be a quiet people who are slow to speak. (Proverbs 13:3; 15:28; 17:27-28; 18:21; 20:25; 21:23; 1 Thessalonians 4:11; 1 Timothy 2:2; 1 Peter 3:4; James 1:19)

We must never use God as an excuse to cancel our obligation to someone else. We musn’t use God to cheat someone else. (Mark 7:11-13)

Vows are to be made voluntarily. They are not to be coerced in any manner. (Leviticus 22:18-25; 23:37-38; Numbers 15:2-16; 29:39)

    

1.   Nazirites and vows. (Numbers 6:1-21)


2. A Nazirite must let his hair grow during the period of separation. (Numbers 6:5)

3.    A Nazirite must shave his head and bring the sacrifice when the period of separation is over. (Numbers 6:13-18)  

4.    Vows and oaths to Yahweh must be kept. (Deuteronomy 23:21-23)  

5.    The Law of binding and loosing a vow. (Numbers 30:2-16)