3 Bible Verses about Age, Span Of Life

Which of you by being over-anxious can add a single foot to his height?

And which of you is able by anxious thought to add a moment to his life?

when, all the while, you do not even know what will happen to-morrow. For what is the nature of your life? Why, it is but a mist, which appears for a short time and then is seen no more. Instead of that you ought to say, "If it is the Lord's will, we shall live and do this or that."