“nor by your head for you are not able to make one hair white or black”.
And which of you with taking thought can add to his stature one cubit?
“Who among you, of those who are anxious, is able to add to his height one cubit?”
“nor by Earth because it is the footstool of His feet, nor by Yerushalayim [abode of peace] because it is the city of The Mighty One”.
“But let your words be ‘yes yes’ or ‘no no’. Everything in addition to this is evil”.