Isaiah 40:28-31

New Century Version

²⁸ Surely you know.
    Surely you have heard.
The Lord is the God who lives forever,
    who created all the world.
He does not become tired or need to rest.
    No one can understand how great his wisdom is.
²⁹ He gives strength to those who are tired
    and more power to those who are weak.
³⁰ Even children become tired and need to rest,
    and young people trip and fall.
³¹ But the people who trust the Lord will become strong again.
They will rise up as an eagle in the sky;
    they will run and not need rest;
    they will walk and not become tired.