Deuteronomy 23:21

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

Ecclesiastes 5:4-5

When thou vowest a vow unto God, defer not to pay it; for he hath no pleasure in fools: pay that which thou vowest.

Deuteronomy 23:18

Thou shalt not bring the hire of a harlot, or the wages of a dog, into the house of Jehovah thy God for any vow: for even both these are an abomination unto Jehovah thy God.

Psalm 66:13-14

I will come into thy house with burnt-offerings; I will pay thee my vows,

Psalm 76:11

Vow, and pay unto Jehovah your God: Let all that are round about him bring presents unto him that ought to be feared.

Genesis 28:20

And Jacob vowed a vow, saying, If God will be with me, and will keep me in this way that I go, and will give me bread to eat, and raiment to put on,

Genesis 35:1-3

And God said unto Jacob, Arise, go up to Beth-el, and dwell there: and make there an altar unto God, who appeared unto thee when thou fleddest from the face of Esau thy brother.

Leviticus 27:2-34

Speak unto the children of Israel, and say unto them, When a man shall accomplish a vow, the persons shall be for Jehovah by thy estimation.

Numbers 30:1-16

And Moses spake unto the heads of the tribes of the children of Israel, saying, This is the thing which Jehovah hath commanded.

Psalm 56:12

Thy vows are upon me, O God: I will render thank-offerings unto thee.

Psalm 116:18

I will pay my vows unto Jehovah, Yea, in the presence of all his people,

Jonah 1:16

Then the men feared Jehovah exceedingly; and they offered a sacrifice unto Jehovah, and made vows.

Jonah 2:9

But I will sacrifice unto thee with the voice of thanksgiving; I will pay that which I have vowed. Salvation is of Jehovah.

Nahum 1:15

Behold, upon the mountains the feet of him that bringeth good tidings, that publisheth peace! Keep thy feasts, O Judah, perform thy vows; for the wicked one shall no more pass through thee; he is utterly cut off.

Matthew 5:33

Again, ye have heard that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform unto 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 shalt not bring the hire of a harlot, or the wages of a dog, into the house of Jehovah thy God for any vow: for even both these are an abomination unto Jehovah thy God.
Genesis 28:20
And Jacob vowed a vow, saying, If God will be with me, and will keep me in this way that I go, and will give me bread to eat, and raiment to put on,
Genesis 35:1
And God said unto Jacob, Arise, go up to Beth-el, and dwell there: and make there an altar unto God, who appeared unto thee when thou fleddest from the face of Esau thy brother.
Leviticus 27:2
Speak unto the children of Israel, and say unto them, When a man shall accomplish a vow, the persons shall be for Jehovah by thy estimation.
Numbers 30:2
When a man voweth a vow unto Jehovah, or sweareth an oath to bind his soul with a bond, he shall not break his word; he shall do according to all that proceedeth out of his mouth.
Psalm 56:12
Thy vows are upon me, O God: I will render thank-offerings unto thee.
Psalm 66:13
I will come into thy house with burnt-offerings; I will pay thee my vows,
Psalm 76:11
Vow, and pay unto Jehovah your God: Let all that are round about him bring presents unto him that ought to be feared.
Psalm 116:18
I will pay my vows unto Jehovah, Yea, in the presence of all his people,
Ecclesiastes 5:4
When thou vowest a vow unto God, defer not to pay it; for he hath no pleasure in fools: pay that which thou vowest.
Jonah 1:16
Then the men feared Jehovah exceedingly; and they offered a sacrifice unto Jehovah, and made vows.
Jonah 2:9
But I will sacrifice unto thee with the voice of thanksgiving; I will pay that which I have vowed. Salvation is of Jehovah.
Nahum 1:15
Behold, upon the mountains the feet of him that bringeth good tidings, that publisheth peace! Keep thy feasts, O Judah, perform thy vows; for the wicked one shall no more pass through thee; he is utterly cut off.

American Standard Version Public Domain