I was remiss in neglecting to mention Matthew 5.33-37 the last time I wrote about this:
‘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.” 34But I say to you, Do not swear at all, either by heaven, for it is the throne of God, 35or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. 36And do not swear by your head, for you cannot make one hair white or black. 37Let your word be “Yes, Yes” or “No, No”; anything more than this comes from the evil one.
Think maybe this mess is why Jesus said, "No swearing. On Anything. Period." in the first place?