Deuteronomy 23:22

But if you take no oath, there will be no sin.

Treasury of Scripture Knowledge

Summary

But if thou shalt forbear to vow, it shall be no sin in thee.

General references

Bible References

General references

Ecclesiastes 5:5
It is better not to take an oath than to take an oath and not keep it.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain