““Again, you have heard that the ancients were told, ‘YOU SHALL NOT MAKE FALSE VOWS, BUT SHALL FULFILL YOUR VOWS TO THE LORD.’ 34But I say to you, make no oath at all, either by heaven, for it is the throne of God, 35or by the earth, for it is the footstool of His feet, or by Jerusalem, for it is THE CITY OF THE GREAT KING. 36Nor shall you make an oath by your head, for you cannot make one hair white or black. 37But let your statement be, ‘Yes, yes’ or ‘No, no’; anything beyond these is of evil.””
