Jeremiah 5:1-2 (New Revised Standard Version)
Run to and fro through the streets of Jerusalem, look around and take note! Search its squares and see if you can find one person who acts justly and seeks truth—-so that I may pardon Jerusalem. Although they say, "As the Lord lives," yet they swear falsely.
Matthew 5:33-37 (New Revised Standard Version)
Again, you have heard that it was said to those of ancient times, "You shall not swear falsely, but carry out the vows you have made to the Lord." But I say to you, Do not swear at all, either by heaven, for it is the throne of God, or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. And do not swear by your head, for you cannot make one hair white or black. Let your word be "Yes, Yes" or "No, No"; anything more than this comes from the evil one.