Deuteronomy 23:21

When thou vowest a vow to Jehovah thy God, thou dost not delay to complete it; for Jehovah thy God doth certainly require it from thee, and it hath been in thee -- sin.

Ecclesiastes 5:4-5

When thou vowest a vow to God, delay not to complete it, for there is no pleasure in fools; that which thou vowest -- complete.

Deuteronomy 23:18

thou dost not bring a gift of a whore, or a price of a dog, into the house of Jehovah thy God, for any vow; for the abomination of Jehovah thy God are even both of them.

Psalm 66:13-14

I enter Thy house with burnt-offerings, I complete to Thee my vows,

Psalm 76:11

Vow and complete to Jehovah your God, All ye surrounding him. They bring presents to the Fearful One.

Genesis 28:20

And Jacob voweth a vow, saying, 'Seeing God is with me, and hath kept me in this way which I am going, and hath given to me bread to eat, and a garment to put on --

Genesis 35:1-3

And God saith unto Jacob, 'Rise, go up to Bethel, and dwell there, and make there an altar to God, who appeared unto thee in thy fleeing from the face of Esau thy brother.'

Leviticus 27:2-34

Speak unto the sons of Israel, and thou hast said unto them, When a man maketh a wonderful vow, by thy valuation the persons are Jehovah's.

Numbers 30:1-16

And Moses speaketh unto the heads of the tribes of the sons of Israel, saying, 'This is the thing which Jehovah hath commanded:

Psalm 56:12

On me, O God, are Thy vows, I repay thank-offerings to Thee.

Psalm 116:18

My vows to Jehovah let me complete, I pray you, before all His people,

Jonah 1:16

and the men fear Jehovah -- a great fear, and sacrifice a sacrifice to Jehovah, and vow vows.

Jonah 2:9

And I -- with a voice of thanksgiving -- I sacrifice to Thee, That which I have vowed I complete, Salvation is of Jehovah.

Nahum 1:15

Lo, on the mountains the feet of one proclaiming tidings, sounding peace! Celebrate, O Judah, thy festivals, complete thy vows, For add no more to pass over into thee doth the worthless, He hath been completely cut off!

Matthew 5:33

'Again, ye heard that it was said to the ancients: Thou shalt not swear falsely, but thou shalt pay to the Lord thine oaths;

Treasury of Scripture Knowledge

Summary

When thou shalt vow a vow unto the LORD thy God, thou shalt not slack to pay it: for the LORD thy God will surely require it of thee; and it would be sin in thee.

Bible References

General references

Deuteronomy 23:18
thou dost not bring a gift of a whore, or a price of a dog, into the house of Jehovah thy God, for any vow; for the abomination of Jehovah thy God are even both of them.
Genesis 28:20
And Jacob voweth a vow, saying, 'Seeing God is with me, and hath kept me in this way which I am going, and hath given to me bread to eat, and a garment to put on --
Genesis 35:1
And God saith unto Jacob, 'Rise, go up to Bethel, and dwell there, and make there an altar to God, who appeared unto thee in thy fleeing from the face of Esau thy brother.'
Leviticus 27:2
Speak unto the sons of Israel, and thou hast said unto them, When a man maketh a wonderful vow, by thy valuation the persons are Jehovah's.
Numbers 30:2
'When a man voweth a vow to Jehovah, or hath sworn an oath to bind a bond on his soul, he doth not pollute his word; according to all that is going out from his mouth he doth.
Psalm 56:12
On me, O God, are Thy vows, I repay thank-offerings to Thee.
Psalm 66:13
I enter Thy house with burnt-offerings, I complete to Thee my vows,
Psalm 76:11
Vow and complete to Jehovah your God, All ye surrounding him. They bring presents to the Fearful One.
Psalm 116:18
My vows to Jehovah let me complete, I pray you, before all His people,
Ecclesiastes 5:4
When thou vowest a vow to God, delay not to complete it, for there is no pleasure in fools; that which thou vowest -- complete.
Jonah 1:16
and the men fear Jehovah -- a great fear, and sacrifice a sacrifice to Jehovah, and vow vows.
Jonah 2:9
And I -- with a voice of thanksgiving -- I sacrifice to Thee, That which I have vowed I complete, Salvation is of Jehovah.
Nahum 1:15
Lo, on the mountains the feet of one proclaiming tidings, sounding peace! Celebrate, O Judah, thy festivals, complete thy vows, For add no more to pass over into thee doth the worthless, He hath been completely cut off!