Isaiah 40:28-31
Hast thou not known? hast thou not heard, that the everlasting God, the Lord, the Creator of the ends of the
earth, fainteth not, neither is weary? There is no searching of his understanding. He giveth power to the faint; and
to them that have no might he increaseth strength. Even the youths shall faint and be weary, and the young men
shall utterly fall: But they that wait upon the Lord shall renew their strength; they shall mount up with wings as
eagles; they shall run, and not be weary; and they shall walk, and not faint."