²⁸ Do you not know?
Have you not heard?
Yahweh is the everlasting God,
the Creator of the whole earth.
He never grows faint or weary;
there is no limit to His understanding.
²⁹ He gives strength to the weary
and strengthens the powerless.
³⁰ Youths may faint and grow weary,
and young men stumble and fall,
³¹ but those who trust in the Lord
will renew their strength;
they will soar on wings like eagles;
they will run and not grow weary;
they will walk and not faint.

(Isaiah 40.28-31 Holman Christian Standard Bible).