Nor should you swear by your head, since you cannot make a single hair either white or black.
Or by the earth, since that is his footstool, or by Jerusalem, since that is the city of the Great King.
Let your words be simply 'Yes' or 'No'; anything beyond this comes from what is wrong.
But which of you, by being anxious, can prolong his life a single moment?
But which of you, by being anxious, can prolong his life a moment?