• Matthew 5:33-37
  "Again you have heard that it was said to those of old, 'You shall not swear falsely, but shall perform your oaths to the Lord.' But I say to you, do not swear at all: neither by heaven, for it is God's throne; nor by the earth, for it is His footstool; nor by Jerusalem, for it is the city of the great King. Nor shall you swear by your head, because you cannot make one hair white or black. But let your 'Yes' be 'Yes,' and your 'No,' 'No.' For whatever is more than these is from the evil one.
   
• James 5:12
  But above all, my brethren, do not swear, either by heaven or by earth or with any other oath. But let your "Yes" be "Yes," and your "No," "No," lest you fall into judgment.
   
• Leviticus 19:12
  And you shall not swear by My name falsely, nor shall you profane the name of your God: I am the LORD.
   

Related Scriptures

• Exodus 20:7
  "You shall not take the name of the LORD your God in vain, for the LORD will not hold him guiltless who takes His name in vain.