Isaiah 40:27-29

New Century Version

²⁷ People of Jacob, why do you complain?
    People of Israel, why do you say,
“The Lord does not see what happens to me;
    he does not care if I am treated fairly”?
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.