Nor shall you swear by your head, because you are not able to make one hair white or black.

Surely man walks in a shadow; nay, he is disquieted in vain; he lays up treasures, and knows not for whom he shall gather them.

I know that whatsoever things God has done, they shall be forever. It is impossible to add to it, and it is impossible to take away from it; and God has done [it], that [men] should fear before Him.

And which of you [by] worrying can add one cubit to his stature?

Therefore if you cannot do a very little thing, why do you worry about the rest?

But now God has set the parts, each one of them, in the body just as He desired.