Isaiah 40:28-30

English Standard Version

²⁸ Have you not known? Have you not heard?
The Lord is ^(A)the everlasting God,
    the Creator of the ends of the earth.
He does not faint or grow weary;
    ^(B)his understanding is unsearchable.
²⁹ He gives power to the faint,
    and to him who has no might he increases strength.
³⁰ Even youths shall faint and be weary,
    and young men shall fall exhausted;