You may not take an oath by your head, because you are not able to make one hair white or black.
And which of you by taking thought is able to make himself any taller?
And which of you by taking thought is able to make himself a cubit taller?
Or by the earth, because it is the resting-place for his foot; or by Jerusalem, because it is the town of the great King.
But let your words be simply, Yes or No: and whatever is more than these is of the Evil One.