Luke 12:15
Who of you by worrying can add a single hour to your life? Since you cannot do this very little thing, why do you worry about the rest? — the futility argument: anxiety does not produce the outcome it is designed to secure. Worry cannot add to lifespan (or height — the word can mean either) and is therefore irrational as well as faithless. The disciples' energy spent on worry could be redirected toward seeking the kingdom.