Matthew 5:33

"Again, you have heard that it was said to the men of old, 'You must not swear falsely, but you must perform your oaths as a religious duty.'

Hebrews 10:6

"Sacrifice and offering you did not wish, but a body you have prepared for me; in burnt-offerings and sin-offerings you never took delight.

Treasury of Scripture Knowledge

Summary

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

Vowest

Bible References

Vowest

Matthew 5:33
"Again, you have heard that it was said to the men of old, 'You must not swear falsely, but you must perform your oaths as a religious duty.'

For

Hebrews 10:6
"Sacrifice and offering you did not wish, but a body you have prepared for me; in burnt-offerings and sin-offerings you never took delight.