Matthew 5:33-34

Again, you have heard that to our ancestors it was said--'Thou shalt not break an oath, but thou shall keep thine oaths as a debt due to the Lord.'

James 5:12

Above all things, my Brothers, never take an oath, either by heaven, or by earth, or by anything else. With you let 'Yes' suffice for yes, and 'No' for no, so that you may escape condemnation.

Treasury of Scripture Knowledge

Summary

Thou shalt not take the name of the LORD thy God in vain: for the LORD will not hold him guiltless that taketh his name in vain.

General references

Bible References

General references

Matthew 5:33
Again, you have heard that to our ancestors it was said--'Thou shalt not break an oath, but thou shall keep thine oaths as a debt due to the Lord.'
James 5:12
Above all things, my Brothers, never take an oath, either by heaven, or by earth, or by anything else. With you let 'Yes' suffice for yes, and 'No' for no, so that you may escape condemnation.