Matthew 5:33-34

"Again, you have heard what was said to people in time's past [Lev. 19:12], 'You must not go back on your oaths, but [rather] fulfill the oaths you take to the Lord.'

James 5:12

But above everything else, my brothers, do not take oaths, not "by the heaven," nor "by the earth," nor by any other oath. But your "yes" should be [simply] "yes," and your "no," [simply] "no," so you do not fall under 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 what was said to people in time's past [Lev. 19:12], 'You must not go back on your oaths, but [rather] fulfill the oaths you take to the Lord.'
James 5:12
But above everything else, my brothers, do not take oaths, not "by the heaven," nor "by the earth," nor by any other oath. But your "yes" should be [simply] "yes," and your "no," [simply] "no," so you do not fall under condemnation.