Neither should you swear by your head, because you cannot make a single hair white or black.
Certainly, man walks about like a mere shadow. Indeed, they frantically rush around in vain, gathering possessions without knowing who will get them.
I know that all God does will last forever; there is no adding to it or taking from it. God works so that people will be in awe of Him.
Can any of you add a cubit to his height by worrying?
If then you're not able to do even a little thing, why worry about the rest?
But now God has placed the parts, each one of them, in the body just as He wanted.