Do not even say, ‘By my head!’ for you can’t turn one hair white or black.
And do not say, ‘By the earth!’ because the earth is his footstool. And do not say, ‘By Jerusalem!’ for Jerusalem is the city of the great King.
Just say a simple, ‘Yes, I will,’ or ‘No, I won’t.’ Anything beyond this is from the evil one.
Can all your worries add a single moment to your life?