Neither shalt thou swear by thy head, for thou canst not make one hair white or black.
nor by the earth, for it is the footstool of his feet; nor by Jerusalem, for it is the city of the great King.
But let your speech be, Yea, yea; Nay, nay: and whatsoever is more than these is of the evil one.
And which of you by being anxious can add one cubit unto his stature?
And which of you by being anxious can add a cubit unto his stature?